1948 Presidential Election Results for Illinois

Click on a county in the table or the map to see demographic data for that county.

County	Turnout	Harry Truman* (D)		Thomas Dewey (R)		Strom Thurmond (States Rights)		Henry Wallace (Progressive)		Other		TOTAL
Adams	67%	14,960	50.8%	14,329	48.7%	0	0.0%	0	0.0%	152	0.5%	29,441
Alexander	65%	4,641	49.9%	4,561	49.1%	0	0.0%	0	0.0%	96	1.0%	9,298
Bond	65%	2,837	43.8%	3,438	53.0%	0	0.0%	0	0.0%	208	3.2%	6,483
Boone	64%	1,941	28.2%	4,916	71.4%	0	0.0%	0	0.0%	25	0.4%	6,882
Brown	67%	1,805	53.3%	1,562	46.1%	0	0.0%	0	0.0%	22	0.6%	3,389
Bureau	70%	6,463	36.4%	11,207	63.1%	0	0.0%	0	0.0%	78	0.4%	17,748
Calhoun	60%	1,377	47.1%	1,526	52.2%	0	0.0%	0	0.0%	20	0.7%	2,923
Carroll	64%	2,809	34.3%	5,318	64.9%	0	0.0%	0	0.0%	62	0.8%	8,189
Cass	70%	3,776	52.3%	3,391	47.0%	0	0.0%	0	0.0%	50	0.7%	7,217
Champaign	43%	11,572	36.8%	19,156	60.9%	0	0.0%	0	0.0%	737	2.3%	31,465
Christian	65%	9,366	54.9%	7,576	44.4%	0	0.0%	0	0.0%	120	0.7%	17,062
Clark	68%	3,714	44.7%	4,477	53.9%	0	0.0%	0	0.0%	112	1.3%	8,303
Clay	58%	3,160	44.5%	3,782	53.2%	0	0.0%	0	0.0%	166	2.3%	7,108
Clinton	68%	4,773	47.9%	5,128	51.5%	0	0.0%	0	0.0%	62	0.6%	9,963
Coles	58%	8,393	49.1%	8,638	50.6%	0	0.0%	0	0.0%	53	0.3%	17,084
Cook	74%	1,216,636	54.2%	1,015,800	45.2%	0	0.0%	0	0.0%	13,463	0.6%	2,245,899
Crawford	63%	4,150	44.3%	5,111	54.6%	0	0.0%	0	0.0%	103	1.1%	9,364
Cumberland	68%	2,353	48.7%	2,451	50.7%	0	0.0%	0	0.0%	28	0.6%	4,832
DeKalb	58%	5,082	30.7%	11,380	68.7%	0	0.0%	0	0.0%	105	0.6%	16,567
DeWitt	65%	3,290	43.8%	4,178	55.6%	0	0.0%	0	0.0%	45	0.6%	7,513
Douglas	62%	2,893	40.6%	4,181	58.6%	0	0.0%	0	0.0%	55	0.8%	7,129
DuPage	65%	15,528	24.9%	45,794	73.6%	0	0.0%	0	0.0%	916	1.5%	62,238
Edgar	71%	5,121	44.6%	6,282	54.8%	0	0.0%	0	0.0%	67	0.6%	11,470
Edwards	60%	1,206	32.0%	2,491	66.1%	0	0.0%	0	0.0%	73	1.9%	3,770
Effingham	70%	4,940	50.1%	4,823	48.9%	0	0.0%	0	0.0%	96	1.0%	9,859
Fayette	66%	5,771	49.7%	5,717	49.3%	0	0.0%	0	0.0%	120	1.0%	11,608
Ford	65%	2,079	29.6%	4,903	69.9%	0	0.0%	0	0.0%	33	0.5%	7,015
Franklin	62%	11,750	54.8%	9,407	43.9%	0	0.0%	0	0.0%	287	1.3%	21,444
Fulton	60%	8,226	45.9%	9,504	53.0%	0	0.0%	0	0.0%	203	1.1%	17,933
Gallatin	61%	2,385	56.8%	1,789	42.6%	0	0.0%	0	0.0%	26	0.6%	4,200
Greene	59%	4,035	52.2%	3,639	47.1%	0	0.0%	0	0.0%	53	0.7%	7,727
Grundy	74%	3,255	35.2%	5,954	64.4%	0	0.0%	0	0.0%	31	0.3%	9,240
Hamilton	64%	2,750	48.5%	2,887	50.9%	0	0.0%	0	0.0%	32	0.6%	5,669
Hancock	72%	5,559	43.5%	7,098	55.5%	0	0.0%	0	0.0%	122	1.0%	12,779
Hardin	59%	1,358	44.0%	1,713	55.5%	0	0.0%	0	0.0%	16	0.5%	3,087
Henderson	67%	1,465	38.2%	2,336	60.9%	0	0.0%	0	0.0%	37	1.0%	3,838
Henry	69%	8,489	40.4%	12,363	58.8%	0	0.0%	0	0.0%	159	0.8%	21,011
Iroquois	64%	4,823	34.4%	9,051	64.6%	0	0.0%	0	0.0%	127	0.9%	14,001
Jackson	54%	6,939	45.0%	8,288	53.8%	0	0.0%	0	0.0%	181	1.2%	15,408
Jasper	71%	2,936	49.4%	2,957	49.8%	0	0.0%	0	0.0%	50	0.8%	5,943
Jefferson	67%	8,928	54.7%	7,393	45.3%	0	0.0%	0	0.0%	0	0.0%	16,321
Jersey	61%	3,092	50.4%	3,021	49.2%	0	0.0%	0	0.0%	26	0.4%	6,139
Jo Daviess	62%	3,220	37.6%	5,299	61.8%	0	0.0%	0	0.0%	51	0.6%	8,570
Johnson	66%	1,510	35.0%	2,778	64.5%	0	0.0%	0	0.0%	21	0.5%	4,309
Kane	64%	21,176	34.7%	39,284	64.4%	0	0.0%	0	0.0%	532	0.9%	60,992
Kankakee	59%	11,305	41.6%	15,699	57.7%	0	0.0%	0	0.0%	197	0.7%	27,201
Kendall	73%	1,517	27.7%	3,925	71.8%	0	0.0%	0	0.0%	27	0.5%	5,469
Knox	67%	9,772	39.2%	15,016	60.2%	0	0.0%	0	0.0%	164	0.7%	24,952
Lake	57%	22,192	35.6%	39,456	63.3%	0	0.0%	0	0.0%	720	1.2%	62,368
LaSalle	65%	19,666	44.3%	24,453	55.0%	0	0.0%	0	0.0%	321	0.7%	44,440
Lawrence	63%	4,391	48.5%	4,472	49.4%	0	0.0%	0	0.0%	194	2.1%	9,057
Lee	55%	4,368	32.5%	9,001	67.0%	0	0.0%	0	0.0%	72	0.5%	13,441
Livingston	65%	5,618	33.3%	11,184	66.3%	0	0.0%	0	0.0%	74	0.4%	16,876
Logan	57%	4,832	39.2%	7,431	60.4%	0	0.0%	0	0.0%	49	0.4%	12,312
Macon	63%	21,487	53.1%	18,719	46.3%	0	0.0%	0	0.0%	250	0.6%	40,456
Macoupin	73%	11,742	52.7%	10,198	45.7%	0	0.0%	0	0.0%	358	1.6%	22,298
Madison	56%	40,897	61.7%	25,059	37.8%	0	0.0%	0	0.0%	350	0.5%	66,306
Marion	58%	8,878	52.6%	7,798	46.2%	0	0.0%	0	0.0%	208	1.2%	16,884
Marshall	72%	2,514	39.8%	3,785	59.9%	0	0.0%	0	0.0%	19	0.3%	6,318
Mason	70%	3,503	49.5%	3,525	49.8%	0	0.0%	0	0.0%	46	0.7%	7,074
Massac	53%	1,842	35.9%	3,201	62.5%	0	0.0%	0	0.0%	82	1.6%	5,125
McDonough	59%	4,206	34.0%	8,058	65.1%	0	0.0%	0	0.0%	109	0.9%	12,373
McHenry	68%	5,459	26.1%	15,387	73.4%	0	0.0%	0	0.0%	103	0.5%	20,949
McLean	58%	12,904	40.9%	18,430	58.5%	0	0.0%	0	0.0%	183	0.6%	31,517
Menard	76%	2,043	41.1%	2,899	58.4%	0	0.0%	0	0.0%	26	0.5%	4,968
Mercer	74%	3,117	37.0%	5,267	62.6%	0	0.0%	0	0.0%	36	0.4%	8,420
Monroe	61%	2,026	37.3%	3,403	62.6%	0	0.0%	0	0.0%	3	0.1%	5,432
Montgomery	73%	7,902	48.0%	8,348	50.7%	0	0.0%	0	0.0%	205	1.2%	16,455
Morgan	62%	6,798	44.6%	8,398	55.1%	0	0.0%	0	0.0%	59	0.4%	15,255
Moultrie	68%	3,037	49.3%	3,043	49.4%	0	0.0%	0	0.0%	81	1.3%	6,161
Ogle	62%	3,796	28.4%	9,519	71.2%	0	0.0%	0	0.0%	63	0.5%	13,378
Peoria	58%	31,026	46.8%	35,018	52.8%	0	0.0%	0	0.0%	308	0.5%	66,352
Perry	68%	5,043	49.3%	5,109	50.0%	0	0.0%	0	0.0%	74	0.7%	10,226
Piatt	65%	2,361	38.9%	3,646	60.1%	0	0.0%	0	0.0%	57	0.9%	6,064
Pike	66%	5,674	54.1%	4,722	45.0%	0	0.0%	0	0.0%	98	0.9%	10,494
Pope	64%	916	34.0%	1,764	65.4%	0	0.0%	0	0.0%	16	0.6%	2,696
Pulaski	54%	2,344	46.6%	2,658	52.8%	0	0.0%	0	0.0%	31	0.6%	5,033
Putnam	72%	905	38.7%	1,405	60.1%	0	0.0%	0	0.0%	26	1.1%	2,336
Randolph	62%	6,852	49.7%	6,867	49.8%	0	0.0%	0	0.0%	62	0.4%	13,781
Richland	55%	2,438	38.0%	3,884	60.6%	0	0.0%	0	0.0%	91	1.4%	6,413
Rock Island	54%	24,542	52.0%	22,192	47.0%	0	0.0%	0	0.0%	477	1.0%	47,211
Saline	63%	7,718	49.8%	7,676	49.6%	0	0.0%	0	0.0%	91	0.6%	15,485
Sangamon	72%	29,196	46.1%	33,714	53.3%	0	0.0%	0	0.0%	363	0.6%	63,273
Schuyler	74%	2,464	48.6%	2,519	49.6%	0	0.0%	0	0.0%	91	1.8%	5,074
Scott	70%	1,735	48.4%	1,840	51.3%	0	0.0%	0	0.0%	13	0.4%	3,588
Shelby	66%	5,589	50.7%	5,282	47.9%	0	0.0%	0	0.0%	158	1.4%	11,029
St. Clair	67%	54,260	63.4%	30,883	36.1%	0	0.0%	0	0.0%	474	0.6%	85,617
Stark	63%	1,163	31.4%	2,537	68.4%	0	0.0%	0	0.0%	7	0.2%	3,707
Stephenson	65%	7,409	40.9%	10,564	58.3%	0	0.0%	0	0.0%	149	0.8%	18,122
Tazewell	56%	14,131	52.8%	12,504	46.7%	0	0.0%	0	0.0%	143	0.5%	26,778
Union	56%	4,479	53.3%	3,864	46.0%	0	0.0%	0	0.0%	55	0.7%	8,398
Vermilion	61%	16,173	45.4%	18,994	53.3%	0	0.0%	0	0.0%	479	1.3%	35,646
Wabash	60%	2,857	48.4%	2,916	49.4%	0	0.0%	0	0.0%	125	2.1%	5,898
Warren	69%	3,367	33.1%	6,738	66.2%	0	0.0%	0	0.0%	74	0.7%	10,179
Washington	72%	2,737	37.3%	4,544	62.0%	0	0.0%	0	0.0%	49	0.7%	7,330
Wayne	62%	4,070	44.7%	4,984	54.7%	0	0.0%	0	0.0%	60	0.7%	9,114
White	63%	4,761	51.0%	4,498	48.2%	0	0.0%	0	0.0%	79	0.8%	9,338
Whiteside	58%	5,299	28.8%	12,922	70.3%	0	0.0%	0	0.0%	154	0.8%	18,375
Will	68%	26,430	47.5%	28,601	51.4%	0	0.0%	0	0.0%	597	1.1%	55,628
Williamson	59%	9,841	48.3%	10,386	51.0%	0	0.0%	0	0.0%	130	0.6%	20,357
Winnebago	59%	27,145	47.4%	29,537	51.5%	0	0.0%	0	0.0%	631	1.1%	57,313
Woodford	68%	3,446	37.1%	5,784	62.4%	0	0.0%	0	0.0%	46	0.5%	9,276
TOTAL	68%	1,994,715	50.1%	1,961,103	49.2%	0	0.0%	0	0.0%	28,228	0.7%	3,984,046

1948 President, Adams County
Candidate	Votes	Pct
Harry Truman* (D)	14,960	50.8%
Thomas Dewey (R)	14,329	48.7%
Other	152	0.5%
TOTAL	29,441
Turnout: 67% Diff (St): -1 Diff (US): 4

1948 President, Alexander County
Candidate	Votes	Pct
Harry Truman* (D)	4,641	49.9%
Thomas Dewey (R)	4,561	49.1%
Other	96	1.0%
TOTAL	9,298
Turnout: 65% Diff (St): 0 Diff (US): 4

1948 President, Bond County
Candidate	Votes	Pct
Harry Truman* (D)	2,837	43.8%
Thomas Dewey (R)	3,438	53.0%
Other	208	3.2%
TOTAL	6,483
Turnout: 65% Diff (St): 4 Diff (US): 8

1948 President, Boone County
Candidate	Votes	Pct
Harry Truman* (D)	1,941	28.2%
Thomas Dewey (R)	4,916	71.4%
Other	25	0.4%
TOTAL	6,882
Turnout: 64% Diff (St): 22 Diff (US): 26

1948 President, Brown County
Candidate	Votes	Pct
Harry Truman* (D)	1,805	53.3%
Thomas Dewey (R)	1,562	46.1%
Other	22	0.6%
TOTAL	3,389
Turnout: 67% Diff (St): -3 Diff (US): 1

1948 President, Bureau County
Candidate	Votes	Pct
Harry Truman* (D)	6,463	36.4%
Thomas Dewey (R)	11,207	63.1%
Other	78	0.4%
TOTAL	17,748
Turnout: 70% Diff (St): 14 Diff (US): 18

1948 President, Calhoun County
Candidate	Votes	Pct
Harry Truman* (D)	1,377	47.1%
Thomas Dewey (R)	1,526	52.2%
Other	20	0.7%
TOTAL	2,923
Turnout: 60% Diff (St): 3 Diff (US): 7

1948 President, Carroll County
Candidate	Votes	Pct
Harry Truman* (D)	2,809	34.3%
Thomas Dewey (R)	5,318	64.9%
Other	62	0.8%
TOTAL	8,189
Turnout: 64% Diff (St): 16 Diff (US): 20

1948 President, Cass County
Candidate	Votes	Pct
Harry Truman* (D)	3,776	52.3%
Thomas Dewey (R)	3,391	47.0%
Other	50	0.7%
TOTAL	7,217
Turnout: 70% Diff (St): -2 Diff (US): 2

1948 President, Champaign County
Candidate	Votes	Pct
Harry Truman* (D)	11,572	36.8%
Thomas Dewey (R)	19,156	60.9%
Other	737	2.3%
TOTAL	31,465
Turnout: 43% Diff (St): 12 Diff (US): 16

1948 President, Christian County
Candidate	Votes	Pct
Harry Truman* (D)	9,366	54.9%
Thomas Dewey (R)	7,576	44.4%
Other	120	0.7%
TOTAL	17,062
Turnout: 65% Diff (St): -5 Diff (US): -1

1948 President, Clark County
Candidate	Votes	Pct
Harry Truman* (D)	3,714	44.7%
Thomas Dewey (R)	4,477	53.9%
Other	112	1.3%
TOTAL	8,303
Turnout: 68% Diff (St): 5 Diff (US): 9

1948 President, Clay County
Candidate	Votes	Pct
Harry Truman* (D)	3,160	44.5%
Thomas Dewey (R)	3,782	53.2%
Other	166	2.3%
TOTAL	7,108
Turnout: 58% Diff (St): 4 Diff (US): 8

1948 President, Clinton County
Candidate	Votes	Pct
Harry Truman* (D)	4,773	47.9%
Thomas Dewey (R)	5,128	51.5%
Other	62	0.6%
TOTAL	9,963
Turnout: 68% Diff (St): 2 Diff (US): 6

1948 President, Coles County
Candidate	Votes	Pct
Harry Truman* (D)	8,393	49.1%
Thomas Dewey (R)	8,638	50.6%
Other	53	0.3%
TOTAL	17,084
Turnout: 58% Diff (St): 1 Diff (US): 5

1948 President, Cook County
Candidate	Votes	Pct
Harry Truman* (D)	1,216,636	54.2%
Thomas Dewey (R)	1,015,800	45.2%
Other	13,463	0.6%
TOTAL	2,245,899
Turnout: 74% Diff (St): -4 Diff (US): 0

1948 President, Crawford County
Candidate	Votes	Pct
Harry Truman* (D)	4,150	44.3%
Thomas Dewey (R)	5,111	54.6%
Other	103	1.1%
TOTAL	9,364
Turnout: 63% Diff (St): 5 Diff (US): 9

1948 President, Cumberland County
Candidate	Votes	Pct
Harry Truman* (D)	2,353	48.7%
Thomas Dewey (R)	2,451	50.7%
Other	28	0.6%
TOTAL	4,832
Turnout: 68% Diff (St): 2 Diff (US): 6

1948 President, DeKalb County
Candidate	Votes	Pct
Harry Truman* (D)	5,082	30.7%
Thomas Dewey (R)	11,380	68.7%
Other	105	0.6%
TOTAL	16,567
Turnout: 58% Diff (St): 19 Diff (US): 24

1948 President, De Witt County
Candidate	Votes	Pct
Harry Truman* (D)	3,290	43.8%
Thomas Dewey (R)	4,178	55.6%
Other	45	0.6%
TOTAL	7,513
Turnout: 65% Diff (St): 6 Diff (US): 11

1948 President, Douglas County
Candidate	Votes	Pct
Harry Truman* (D)	2,893	40.6%
Thomas Dewey (R)	4,181	58.6%
Other	55	0.8%
TOTAL	7,129
Turnout: 62% Diff (St): 9 Diff (US): 14

1948 President, DuPage County
Candidate	Votes	Pct
Harry Truman* (D)	15,528	24.9%
Thomas Dewey (R)	45,794	73.6%
Other	916	1.5%
TOTAL	62,238
Turnout: 65% Diff (St): 24 Diff (US): 28

1948 President, Edgar County
Candidate	Votes	Pct
Harry Truman* (D)	5,121	44.6%
Thomas Dewey (R)	6,282	54.8%
Other	67	0.6%
TOTAL	11,470
Turnout: 71% Diff (St): 6 Diff (US): 10

1948 President, Edwards County
Candidate	Votes	Pct
Harry Truman* (D)	1,206	32.0%
Thomas Dewey (R)	2,491	66.1%
Other	73	1.9%
TOTAL	3,770
Turnout: 60% Diff (St): 17 Diff (US): 21

1948 President, Effingham County
Candidate	Votes	Pct
Harry Truman* (D)	4,940	50.1%
Thomas Dewey (R)	4,823	48.9%
Other	96	1.0%
TOTAL	9,859
Turnout: 70% Diff (St): 0 Diff (US): 4

1948 President, Fayette County
Candidate	Votes	Pct
Harry Truman* (D)	5,771	49.7%
Thomas Dewey (R)	5,717	49.3%
Other	120	1.0%
TOTAL	11,608
Turnout: 66% Diff (St): 0 Diff (US): 4

1948 President, Ford County
Candidate	Votes	Pct
Harry Truman* (D)	2,079	29.6%
Thomas Dewey (R)	4,903	69.9%
Other	33	0.5%
TOTAL	7,015
Turnout: 65% Diff (St): 21 Diff (US): 25

1948 President, Franklin County
Candidate	Votes	Pct
Harry Truman* (D)	11,750	54.8%
Thomas Dewey (R)	9,407	43.9%
Other	287	1.3%
TOTAL	21,444
Turnout: 62% Diff (St): -5 Diff (US): -1

1948 President, Fulton County
Candidate	Votes	Pct
Harry Truman* (D)	8,226	45.9%
Thomas Dewey (R)	9,504	53.0%
Other	203	1.1%
TOTAL	17,933
Turnout: 60% Diff (St): 4 Diff (US): 8

1948 President, Gallatin County
Candidate	Votes	Pct
Harry Truman* (D)	2,385	56.8%
Thomas Dewey (R)	1,789	42.6%
Other	26	0.6%
TOTAL	4,200
Turnout: 61% Diff (St): -7 Diff (US): -3

1948 President, Greene County
Candidate	Votes	Pct
Harry Truman* (D)	4,035	52.2%
Thomas Dewey (R)	3,639	47.1%
Other	53	0.7%
TOTAL	7,727
Turnout: 59% Diff (St): -2 Diff (US): 2

1948 President, Grundy County
Candidate	Votes	Pct
Harry Truman* (D)	3,255	35.2%
Thomas Dewey (R)	5,954	64.4%
Other	31	0.3%
TOTAL	9,240
Turnout: 74% Diff (St): 15 Diff (US): 19

1948 President, Hamilton County
Candidate	Votes	Pct
Harry Truman* (D)	2,750	48.5%
Thomas Dewey (R)	2,887	50.9%
Other	32	0.6%
TOTAL	5,669
Turnout: 64% Diff (St): 2 Diff (US): 6

1948 President, Hancock County
Candidate	Votes	Pct
Harry Truman* (D)	5,559	43.5%
Thomas Dewey (R)	7,098	55.5%
Other	122	1.0%
TOTAL	12,779
Turnout: 72% Diff (St): 6 Diff (US): 10

1948 President, Hardin County
Candidate	Votes	Pct
Harry Truman* (D)	1,358	44.0%
Thomas Dewey (R)	1,713	55.5%
Other	16	0.5%
TOTAL	3,087
Turnout: 59% Diff (St): 6 Diff (US): 10

1948 President, Henderson County
Candidate	Votes	Pct
Harry Truman* (D)	1,465	38.2%
Thomas Dewey (R)	2,336	60.9%
Other	37	1.0%
TOTAL	3,838
Turnout: 67% Diff (St): 12 Diff (US): 16

1948 President, Henry County
Candidate	Votes	Pct
Harry Truman* (D)	8,489	40.4%
Thomas Dewey (R)	12,363	58.8%
Other	159	0.8%
TOTAL	21,011
Turnout: 69% Diff (St): 10 Diff (US): 14

1948 President, Iroquois County
Candidate	Votes	Pct
Harry Truman* (D)	4,823	34.4%
Thomas Dewey (R)	9,051	64.6%
Other	127	0.9%
TOTAL	14,001
Turnout: 64% Diff (St): 15 Diff (US): 20

1948 President, Jackson County
Candidate	Votes	Pct
Harry Truman* (D)	6,939	45.0%
Thomas Dewey (R)	8,288	53.8%
Other	181	1.2%
TOTAL	15,408
Turnout: 54% Diff (St): 5 Diff (US): 9

1948 President, Jasper County
Candidate	Votes	Pct
Harry Truman* (D)	2,936	49.4%
Thomas Dewey (R)	2,957	49.8%
Other	50	0.8%
TOTAL	5,943
Turnout: 71% Diff (St): 1 Diff (US): 5

1948 President, Jefferson County
Candidate	Votes	Pct
Harry Truman* (D)	8,928	54.7%
Thomas Dewey (R)	7,393	45.3%
TOTAL	16,321
Turnout: 67% Diff (St): -4 Diff (US): 0

1948 President, Jersey County
Candidate	Votes	Pct
Harry Truman* (D)	3,092	50.4%
Thomas Dewey (R)	3,021	49.2%
Other	26	0.4%
TOTAL	6,139
Turnout: 61% Diff (St): 0 Diff (US): 4

1948 President, Jo Daviess County
Candidate	Votes	Pct
Harry Truman* (D)	3,220	37.6%
Thomas Dewey (R)	5,299	61.8%
Other	51	0.6%
TOTAL	8,570
Turnout: 62% Diff (St): 13 Diff (US): 17

1948 President, Johnson County
Candidate	Votes	Pct
Harry Truman* (D)	1,510	35.0%
Thomas Dewey (R)	2,778	64.5%
Other	21	0.5%
TOTAL	4,309
Turnout: 66% Diff (St): 15 Diff (US): 19

1948 President, Kane County
Candidate	Votes	Pct
Harry Truman* (D)	21,176	34.7%
Thomas Dewey (R)	39,284	64.4%
Other	532	0.9%
TOTAL	60,992
Turnout: 64% Diff (St): 15 Diff (US): 19

1948 President, Kankakee County
Candidate	Votes	Pct
Harry Truman* (D)	11,305	41.6%
Thomas Dewey (R)	15,699	57.7%
Other	197	0.7%
TOTAL	27,201
Turnout: 59% Diff (St): 8 Diff (US): 13

1948 President, Kendall County
Candidate	Votes	Pct
Harry Truman* (D)	1,517	27.7%
Thomas Dewey (R)	3,925	71.8%
Other	27	0.5%
TOTAL	5,469
Turnout: 73% Diff (St): 23 Diff (US): 27

1948 President, Knox County
Candidate	Votes	Pct
Harry Truman* (D)	9,772	39.2%
Thomas Dewey (R)	15,016	60.2%
Other	164	0.7%
TOTAL	24,952
Turnout: 67% Diff (St): 11 Diff (US): 15

1948 President, Lake County
Candidate	Votes	Pct
Harry Truman* (D)	22,192	35.6%
Thomas Dewey (R)	39,456	63.3%
Other	720	1.2%
TOTAL	62,368
Turnout: 57% Diff (St): 14 Diff (US): 18

1948 President, La Salle County
Candidate	Votes	Pct
Harry Truman* (D)	19,666	44.3%
Thomas Dewey (R)	24,453	55.0%
Other	321	0.7%
TOTAL	44,440
Turnout: 65% Diff (St): 6 Diff (US): 10

1948 President, Lawrence County
Candidate	Votes	Pct
Harry Truman* (D)	4,391	48.5%
Thomas Dewey (R)	4,472	49.4%
Other	194	2.1%
TOTAL	9,057
Turnout: 63% Diff (St): 0 Diff (US): 4

1948 President, Lee County
Candidate	Votes	Pct
Harry Truman* (D)	4,368	32.5%
Thomas Dewey (R)	9,001	67.0%
Other	72	0.5%
TOTAL	13,441
Turnout: 55% Diff (St): 18 Diff (US): 22

1948 President, Livingston County
Candidate	Votes	Pct
Harry Truman* (D)	5,618	33.3%
Thomas Dewey (R)	11,184	66.3%
Other	74	0.4%
TOTAL	16,876
Turnout: 65% Diff (St): 17 Diff (US): 21

1948 President, Logan County
Candidate	Votes	Pct
Harry Truman* (D)	4,832	39.2%
Thomas Dewey (R)	7,431	60.4%
Other	49	0.4%
TOTAL	12,312
Turnout: 57% Diff (St): 11 Diff (US): 15

1948 President, McDonough County
Candidate	Votes	Pct
Harry Truman* (D)	4,206	34.0%
Thomas Dewey (R)	8,058	65.1%
Other	109	0.9%
TOTAL	12,373
Turnout: 59% Diff (St): 16 Diff (US): 20

1948 President, McHenry County
Candidate	Votes	Pct
Harry Truman* (D)	5,459	26.1%
Thomas Dewey (R)	15,387	73.4%
Other	103	0.5%
TOTAL	20,949
Turnout: 68% Diff (St): 24 Diff (US): 28

1948 President, McLean County
Candidate	Votes	Pct
Harry Truman* (D)	12,904	40.9%
Thomas Dewey (R)	18,430	58.5%
Other	183	0.6%
TOTAL	31,517
Turnout: 58% Diff (St): 9 Diff (US): 13

1948 President, Macon County
Candidate	Votes	Pct
Harry Truman* (D)	21,487	53.1%
Thomas Dewey (R)	18,719	46.3%
Other	250	0.6%
TOTAL	40,456
Turnout: 63% Diff (St): -3 Diff (US): 1

1948 President, Macoupin County
Candidate	Votes	Pct
Harry Truman* (D)	11,742	52.7%
Thomas Dewey (R)	10,198	45.7%
Other	358	1.6%
TOTAL	22,298
Turnout: 73% Diff (St): -3 Diff (US): 1

1948 President, Madison County
Candidate	Votes	Pct
Harry Truman* (D)	40,897	61.7%
Thomas Dewey (R)	25,059	37.8%
Other	350	0.5%
TOTAL	66,306
Turnout: 56% Diff (St): -11 Diff (US): -7

1948 President, Marion County
Candidate	Votes	Pct
Harry Truman* (D)	8,878	52.6%
Thomas Dewey (R)	7,798	46.2%
Other	208	1.2%
TOTAL	16,884
Turnout: 58% Diff (St): -3 Diff (US): 1

1948 President, Marshall County
Candidate	Votes	Pct
Harry Truman* (D)	2,514	39.8%
Thomas Dewey (R)	3,785	59.9%
Other	19	0.3%
TOTAL	6,318
Turnout: 72% Diff (St): 11 Diff (US): 15

1948 President, Mason County
Candidate	Votes	Pct
Harry Truman* (D)	3,503	49.5%
Thomas Dewey (R)	3,525	49.8%
Other	46	0.7%
TOTAL	7,074
Turnout: 70% Diff (St): 1 Diff (US): 5

1948 President, Massac County
Candidate	Votes	Pct
Harry Truman* (D)	1,842	35.9%
Thomas Dewey (R)	3,201	62.5%
Other	82	1.6%
TOTAL	5,125
Turnout: 53% Diff (St): 13 Diff (US): 17

1948 President, Menard County
Candidate	Votes	Pct
Harry Truman* (D)	2,043	41.1%
Thomas Dewey (R)	2,899	58.4%
Other	26	0.5%
TOTAL	4,968
Turnout: 76% Diff (St): 9 Diff (US): 13

1948 President, Mercer County
Candidate	Votes	Pct
Harry Truman* (D)	3,117	37.0%
Thomas Dewey (R)	5,267	62.6%
Other	36	0.4%
TOTAL	8,420
Turnout: 74% Diff (St): 13 Diff (US): 17

1948 President, Monroe County
Candidate	Votes	Pct
Harry Truman* (D)	2,026	37.3%
Thomas Dewey (R)	3,403	62.6%
Other	3	0.1%
TOTAL	5,432
Turnout: 61% Diff (St): 13 Diff (US): 18

1948 President, Montgomery County
Candidate	Votes	Pct
Harry Truman* (D)	7,902	48.0%
Thomas Dewey (R)	8,348	50.7%
Other	205	1.2%
TOTAL	16,455
Turnout: 73% Diff (St): 2 Diff (US): 6

1948 President, Morgan County
Candidate	Votes	Pct
Harry Truman* (D)	6,798	44.6%
Thomas Dewey (R)	8,398	55.1%
Other	59	0.4%
TOTAL	15,255
Turnout: 62% Diff (St): 6 Diff (US): 10

1948 President, Moultrie County
Candidate	Votes	Pct
Harry Truman* (D)	3,037	49.3%
Thomas Dewey (R)	3,043	49.4%
Other	81	1.3%
TOTAL	6,161
Turnout: 68% Diff (St): 0 Diff (US): 4

1948 President, Ogle County
Candidate	Votes	Pct
Harry Truman* (D)	3,796	28.4%
Thomas Dewey (R)	9,519	71.2%
Other	63	0.5%
TOTAL	13,378
Turnout: 62% Diff (St): 22 Diff (US): 26

1948 President, Peoria County
Candidate	Votes	Pct
Harry Truman* (D)	31,026	46.8%
Thomas Dewey (R)	35,018	52.8%
Other	308	0.5%
TOTAL	66,352
Turnout: 58% Diff (St): 4 Diff (US): 8

1948 President, Perry County
Candidate	Votes	Pct
Harry Truman* (D)	5,043	49.3%
Thomas Dewey (R)	5,109	50.0%
Other	74	0.7%
TOTAL	10,226
Turnout: 68% Diff (St): 1 Diff (US): 5

1948 President, Piatt County
Candidate	Votes	Pct
Harry Truman* (D)	2,361	38.9%
Thomas Dewey (R)	3,646	60.1%
Other	57	0.9%
TOTAL	6,064
Turnout: 65% Diff (St): 11 Diff (US): 15

1948 President, Pike County
Candidate	Votes	Pct
Harry Truman* (D)	5,674	54.1%
Thomas Dewey (R)	4,722	45.0%
Other	98	0.9%
TOTAL	10,494
Turnout: 66% Diff (St): -4 Diff (US): 0

1948 President, Pope County
Candidate	Votes	Pct
Harry Truman* (D)	916	34.0%
Thomas Dewey (R)	1,764	65.4%
Other	16	0.6%
TOTAL	2,696
Turnout: 64% Diff (St): 16 Diff (US): 20

1948 President, Pulaski County
Candidate	Votes	Pct
Harry Truman* (D)	2,344	46.6%
Thomas Dewey (R)	2,658	52.8%
Other	31	0.6%
TOTAL	5,033
Turnout: 54% Diff (St): 4 Diff (US): 8

1948 President, Putnam County
Candidate	Votes	Pct
Harry Truman* (D)	905	38.7%
Thomas Dewey (R)	1,405	60.1%
Other	26	1.1%
TOTAL	2,336
Turnout: 72% Diff (St): 11 Diff (US): 15

1948 President, Randolph County
Candidate	Votes	Pct
Harry Truman* (D)	6,852	49.7%
Thomas Dewey (R)	6,867	49.8%
Other	62	0.4%
TOTAL	13,781
Turnout: 62% Diff (St): 1 Diff (US): 5

1948 President, Richland County
Candidate	Votes	Pct
Harry Truman* (D)	2,438	38.0%
Thomas Dewey (R)	3,884	60.6%
Other	91	1.4%
TOTAL	6,413
Turnout: 55% Diff (St): 11 Diff (US): 15

1948 President, Rock Island County
Candidate	Votes	Pct
Harry Truman* (D)	24,542	52.0%
Thomas Dewey (R)	22,192	47.0%
Other	477	1.0%
TOTAL	47,211
Turnout: 54% Diff (St): -2 Diff (US): 2

1948 President, St. Clair County
Candidate	Votes	Pct
Harry Truman* (D)	54,260	63.4%
Thomas Dewey (R)	30,883	36.1%
Other	474	0.6%
TOTAL	85,617
Turnout: 67% Diff (St): -13 Diff (US): -9

1948 President, Saline County
Candidate	Votes	Pct
Harry Truman* (D)	7,718	49.8%
Thomas Dewey (R)	7,676	49.6%
Other	91	0.6%
TOTAL	15,485
Turnout: 63% Diff (St): 0 Diff (US): 4

1948 President, Sangamon County
Candidate	Votes	Pct
Harry Truman* (D)	29,196	46.1%
Thomas Dewey (R)	33,714	53.3%
Other	363	0.6%
TOTAL	63,273
Turnout: 72% Diff (St): 4 Diff (US): 8

1948 President, Schuyler County
Candidate	Votes	Pct
Harry Truman* (D)	2,464	48.6%
Thomas Dewey (R)	2,519	49.6%
Other	91	1.8%
TOTAL	5,074
Turnout: 74% Diff (St): 0 Diff (US): 5

1948 President, Scott County
Candidate	Votes	Pct
Harry Truman* (D)	1,735	48.4%
Thomas Dewey (R)	1,840	51.3%
Other	13	0.4%
TOTAL	3,588
Turnout: 70% Diff (St): 2 Diff (US): 6

1948 President, Shelby County
Candidate	Votes	Pct
Harry Truman* (D)	5,589	50.7%
Thomas Dewey (R)	5,282	47.9%
Other	158	1.4%
TOTAL	11,029
Turnout: 66% Diff (St): -1 Diff (US): 3

1948 President, Stark County
Candidate	Votes	Pct
Harry Truman* (D)	1,163	31.4%
Thomas Dewey (R)	2,537	68.4%
Other	7	0.2%
TOTAL	3,707
Turnout: 63% Diff (St): 19 Diff (US): 23

1948 President, Stephenson County
Candidate	Votes	Pct
Harry Truman* (D)	7,409	40.9%
Thomas Dewey (R)	10,564	58.3%
Other	149	0.8%
TOTAL	18,122
Turnout: 65% Diff (St): 9 Diff (US): 13

1948 President, Tazewell County
Candidate	Votes	Pct
Harry Truman* (D)	14,131	52.8%
Thomas Dewey (R)	12,504	46.7%
Other	143	0.5%
TOTAL	26,778
Turnout: 56% Diff (St): -3 Diff (US): 2

1948 President, Union County
Candidate	Votes	Pct
Harry Truman* (D)	4,479	53.3%
Thomas Dewey (R)	3,864	46.0%
Other	55	0.7%
TOTAL	8,398
Turnout: 56% Diff (St): -3 Diff (US): 1

1948 President, Vermilion County
Candidate	Votes	Pct
Harry Truman* (D)	16,173	45.4%
Thomas Dewey (R)	18,994	53.3%
Other	479	1.3%
TOTAL	35,646
Turnout: 61% Diff (St): 4 Diff (US): 8

1948 President, Wabash County
Candidate	Votes	Pct
Harry Truman* (D)	2,857	48.4%
Thomas Dewey (R)	2,916	49.4%
Other	125	2.1%
TOTAL	5,898
Turnout: 60% Diff (St): 0 Diff (US): 4

1948 President, Warren County
Candidate	Votes	Pct
Harry Truman* (D)	3,367	33.1%
Thomas Dewey (R)	6,738	66.2%
Other	74	0.7%
TOTAL	10,179
Turnout: 69% Diff (St): 17 Diff (US): 21

1948 President, Washington County
Candidate	Votes	Pct
Harry Truman* (D)	2,737	37.3%
Thomas Dewey (R)	4,544	62.0%
Other	49	0.7%
TOTAL	7,330
Turnout: 72% Diff (St): 13 Diff (US): 17

1948 President, Wayne County
Candidate	Votes	Pct
Harry Truman* (D)	4,070	44.7%
Thomas Dewey (R)	4,984	54.7%
Other	60	0.7%
TOTAL	9,114
Turnout: 62% Diff (St): 5 Diff (US): 10

1948 President, White County
Candidate	Votes	Pct
Harry Truman* (D)	4,761	51.0%
Thomas Dewey (R)	4,498	48.2%
Other	79	0.8%
TOTAL	9,338
Turnout: 63% Diff (St): -1 Diff (US): 3

1948 President, Whiteside County
Candidate	Votes	Pct
Harry Truman* (D)	5,299	28.8%
Thomas Dewey (R)	12,922	70.3%
Other	154	0.8%
TOTAL	18,375
Turnout: 58% Diff (St): 21 Diff (US): 25

1948 President, Will County
Candidate	Votes	Pct
Harry Truman* (D)	26,430	47.5%
Thomas Dewey (R)	28,601	51.4%
Other	597	1.1%
TOTAL	55,628
Turnout: 68% Diff (St): 2 Diff (US): 6

1948 President, Williamson County
Candidate	Votes	Pct
Harry Truman* (D)	9,841	48.3%
Thomas Dewey (R)	10,386	51.0%
Other	130	0.6%
TOTAL	20,357
Turnout: 59% Diff (St): 2 Diff (US): 6

1948 President, Winnebago County
Candidate	Votes	Pct
Harry Truman* (D)	27,145	47.4%
Thomas Dewey (R)	29,537	51.5%
Other	631	1.1%
TOTAL	57,313
Turnout: 59% Diff (St): 2 Diff (US): 6

1948 President, Woodford County
Candidate	Votes	Pct
Harry Truman* (D)	3,446	37.1%
Thomas Dewey (R)	5,784	62.4%
Other	46	0.5%
TOTAL	9,276
Turnout: 68% Diff (St): 13 Diff (US): 17

* incumbent