Seneca township, IL

Tracts in this county

2022 population: 2,900 ( 44 from 2010 )
Land area: 35.9 square miles
Population density: 80.9 persons per square mile

2022 Census data
White:	2,688	92.69%	0.6%
Black:	5	0.17%	54.5%
Indian:	0	0.00%	100.0%
Asian:	0	0.00%	100.0%
2+ races:	155	5.34%	342.9%
Hispanic:	52	1.79%	66.5%

Total non-White:	212	7.31%	12.0%

2010-2022 Components	Number	Rate

Change in White population:	-15	-0.6
Change in Non-White pop.:	-29	-1.2

Race Breakdown with Components of Population Change

[Display all years]

Year:

Total population:

White:

Black:

Indian:

Asian:

2+ races:

Hispanic:

Total non-White:

2010
2,944
2,703	91.81%
11	0.37%
3	0.10%
37	1.26%
35	1.19%
155	5.26%
241	8.19%

2000
2,918
2,715	93.04%
4	0.14%
0	0.00%
10	0.34%
11	0.38%
172	5.89%
203	6.96%

1990
2,336
2,274	97.35%
0	0.00%
13	0.56%
17	0.73%
n/a
32	1.37%
62	2.65%

1980
2,071
1,973	95.27%
0	0.00%
3	0.14%
12	0.58%
n/a
83	4.01%
98	4.73%

Decade:

Components:

Births:

Deaths:

Net Migration:

Net Immigration:

Change in White population:

Change in Non-White pop.:

Number	Rate
2000's
n/a
n/a
n/a
n/a

-12	-0.4
38	1.3

Number	Rate
1990's
n/a
n/a
n/a
n/a

441	18.9
141	6.0

Number	Rate
1980's
n/a
n/a
n/a
n/a

301	14.5
-36	-1.7

Age, Family & Household Data for Seneca township, IL

[Display all years]

Year:

Median Age:

Under 18:

Voting Age Population:

Over 65:

Households:

Persons Per HH:

Families (%HH):

Married Couples (%Fams):

Single Mothers (%Fams):

Non-Family (%HH):

2022
Number	Percent
43.2
733	25.3%
2,167	74.7%
528	18.2%

886
3.21

814	91.9%
764	93.9%
0	0.0%
72	8.1%

2010
Number	Percent
46.7
631	21.4%
2,313	78.6%
465	15.8%

1,029
2.83

870	84.5%
802	92.2%
18	2.1%
159	15.5%

2000
Number	Percent
36.9
915	31.4%
2,003	68.6%
197	6.8%

891
3.25

794	89.1%
725	91.3%
27	3.4%
97	10.9%

1990
Number	Percent
35.5
613	26.2%
1,723	73.8%
165	7.1%

726
3.22

618	85.1%
596	96.4%
6	1.0%
108	14.9%

1980
Number	Percent
29.9
715	34.5%
1,356	65.5%
129	6.2%

591
3.40

541	91.5%
512	94.6%
10	1.8%
50	8.5%

2022 Housing Data for Seneca township, IL

Household Income
Range	Number	%
$35,000 to $39,999	26	2.9%
$45,000 to $49,999	52	5.9%
$50,000 to $59,999	59	6.7%
$60,000 to $74,999	94	10.6%
$75,000 to $99,999	98	11.1%
$100,000 to $124,999	96	10.8%
$125,000 to $149,999	65	7.3%
$150,000 to $199,999	245	27.7%
$200,000 or more	151	17.0%

Median Household Income	128,598
Per Capita Income	46,719

Welfare Households
	Number	%
SSI	27	3.0%
Public Assistance	0	0.0%
Public Asst. or Food Stamps	0	0.0%

Labor Force, Ages 25-64
	Number	%
Employed	1,306	79.2%
Unemployed	156	9.5%
In Armed Forces	0	0.0%

Total Labor Force	1,462	88.6%
Not in Labor Force	188	11.4%

Real Unemployment Rate		20.8%

Class of Worker
	Male	Female	% Male
Private Sector	487	420	53.7%
Non-Profit	0	94	0.0%
Self-Employed	115	119	49.1%

Local Government	205	83	71.2%
State Government	0	0	?%
Federal Government	0	0	?%

Total Private + Self	602	539	52.8%
Total Non-Profit + Govt.	205	177	53.7%
Total	807	716	53.0%

Pct. Govt.	18.9%

Occupation
	Number	%
Management, Business, Science, Arts	443	29.1%
Sales and Office Occupations	243	16.0%
Professional, Technical	309	20.3%
Service Occupations	179	11.8%
All others	349	22.9%

White Collar		65.3%

Industry
	Number	%
Manufacturing	323	21.2%
Educational services	209	13.7%
Health care and social assistance	197	12.9%
Retail trade	163	10.7%
Construction	154	10.1%
Public administration	146	9.6%
Other services	110	7.2%
Professional, scientific, technical	93	6.1%
Accommodation and food services	53	3.5%
Administrative, support, waste mgmt.	53	3.5%
Finance and insurance	22	1.4%

Hispanic Breakdown
Country	Number	%
Mexican	39	1.34%
Puerto Rican	0	0.00%
Cuban	0	0.00%
Dominican	0	0.00%

Total Central American	0	0.00%
Costa Rican	0	0.00%
Guatemalan	0	0.00%
Honduran	0	0.00%
Nicaraguan	0	0.00%
Panamanian	0	0.00%
Salvadoran	0	0.00%
Other Central American	0	0.00%

Total South American	0	0.00%
Argentinean	0	0.00%
Bolivian	0	0.00%
Chilean	0	0.00%
Colombian	0	0.00%
Ecuadorian	0	0.00%
Paraguayan	0	0.00%
Peruvian	0	0.00%
Uruguayan	0	0.00%
Venezuelan	0	0.00%
Other South American	0	0.00%

Other Hispanic	13	0.45%

Asian Breakdown
Country	Number	%

Language Spoken at Home
Language	Number	%
English	2,625	95.9%
Russian, Polish, other Slavic	75	2.7%
Spanish	36	1.3%

Ancestry
Country	Number	%
German	1,283	44.2%
Irish	590	20.3%
Polish	562	19.4%
Italian	426	14.7%
English	350	12.1%
Norwegian	129	4.4%
French	120	4.1%
American	93	3.2%
Swedish	84	2.9%
Czech	52	1.8%
Russian	38	1.3%
Dutch	30	1.0%
Austrian	28	1.0%
British	26	0.9%
Danish	26	0.9%

Citizenship & Nativity
	Number	%
U.S. citizen	2,887	99.6%
Not a citizen	13	0.4%

Native	2,858	98.6%
Foreign-born	42	1.4%

Educational Attainment, Population 25 Years and Older
27	1.4%	11	0.6%	554	29.0%	611	32.0%	412	21.6%	296	15.5%
Average years of education: 14.1

Population 25 Years and Older
< 9 Years	27	1.4%
9-12 Years	11	0.6%
H.S. Grad or GED	554	29.0%
Some College	611	32.0%
Bach. Degree	412	21.6%
Grad Degree	296	15.5%
Average years of education: 14.1

Recent Trends
	Votes	Δ Margin	Swing %
2020 vs. 2016	R +92	D +36	D + 4.9%
D +128
2020 vs. 2012	R +17	D +94	D + 7.3%
D +111
2020 vs. 2008	R +112	R +181	R + 10.4%
D -69

2016 vs. 2008	R +20	R +217	R + 15.3%
D -197
How to interpret this table

Click on the Year to view municipality-level data for this county.
(Some years may be unavailable)

Year	Turnout	Winner			Runner-Up			Other		Total Votes	Diff (St)	Diff (US)	PSV
2020	79%	Donald Trump* (R)	1,003	57.0%	Joe Biden (D)	711	40.4%	47	2.7%	1,761	17	10	0.03%
2016	71%	Donald Trump (R)	911	56.9%	Hillary Clinton (D)	583	36.4%	107	6.7%	1,601	19	11	0.03%
2012	70%	Mitt Romney (R)	986	61.1%	Barack Obama* (D)	600	37.2%	28	1.7%	1,614	20	14	0.03%
2008	75%	John McCain (R)	891	52.5%	Barack Obama (D)	780	46.0%	25	1.5%	1,696	16	7	0.03%
2000	69%	George W. Bush (R)	832	60.4%	Albert Gore, Jr. (D)	494	35.9%	51	3.7%	1,377	18	13	0.03%

* incumbent PSV: percent of state vote

2020 President, Seneca township

Candidate

Votes

Pct

Joe Biden (D)

711

40.4%

Donald Trump* (R)

1,003

57.0%

Jo Jorgensen (Lbt)

1.4%

Other

1.3%

TOTAL

1,761

Turnout: 79%	Diff (St): 17	Diff (US): 10

2016 President, Seneca township

Candidate

Votes

Pct

Hillary Clinton (D)

583

36.4%

Donald Trump (R)

911

56.9%

Gary Johnson (Lbt)

4.1%

Other

2.6%

TOTAL

1,601

Turnout: 71%	Diff (St): 19	Diff (US): 11

2012 President, Seneca township

Candidate

Votes

Pct

Barack Obama* (D)

600

37.2%

Mitt Romney (R)

986

61.1%

Other

1.7%

TOTAL

1,614

Turnout: 70%	Diff (St): 20	Diff (US): 14

2008 President, Seneca township

Candidate

Votes

Pct

Barack Obama (D)

780

46.0%

John McCain (R)

891

52.5%

Other

1.5%

TOTAL

1,696

Turnout: 75%	Diff (St): 16	Diff (US): 7

2000 President, Seneca township

Candidate

Votes

Pct

George W. Bush (R)

832

60.4%

Albert Gore, Jr. (D)

494

35.9%

Ralph Nader (Grn)

2.8%

Other

0.9%

TOTAL

1,377

Turnout: 69%	Diff (St): 18	Diff (US): 13

* incumbent

Historical Statewide Election Results for Seneca township, IL

Click on the Year to view county-level data for that election.
(Some years may be unavailable)

Year	Type	Turnout	Winner			Runner-Up			Other		Total Votes	Diff	PSV
2022	S3	62%	Kathy Salvi (R)	766	55.9%	Tammy Duckworth* (D)	578	42.2%	26 [+]	1.9%	1,370	14	0.03%
[-] Other candidates in 2022: William Redpath (Libertarian) 25 (1.8%); Other (Write-in) 1 (0.1%);
2022	G	62%	Darren Bailey (R)	768	56.0%	J.B. Pritzker* (D)	563	41.0%	41 [+]	3.0%	1,372	14	0.03%
[-] Other candidates in 2022: Scott Schluter (Libertarian) 39 (2.8%); Other (Write-in) 2 (0.1%);
2020	S2	79%	Mark Curran (R)	979	55.9%	Richard Durbin* (D)	691	39.4%	82 [+]	4.7%	1,752	17	0.03%
[-] Other candidates in 2020: Willie Wilson (I) 48 (2.7%); Danny Malouf (Libertarian) 21 (1.2%); Other (Write-in) 13 (0.7%);
2018	G	64%	Bruce Rauner* (R)	858	59.7%	J.B. Pritzker (D)	484	33.7%	96 [+]	6.7%	1,438	21	0.03%
[-] Other candidates in 2018: Sam McCann (Conservative) 54 (3.8%); Grayson Jackson (Libertarian) 42 (2.9%);
2016	S3	71%	Mark Kirk* (R)	911	57.0%	Tammy Duckworth (D)	564	35.3%	124 [+]	7.8%	1,599	17	0.03%
[-] Other candidates in 2016: Ken McMillen (Libertarian) 80 (5.0%); Scott Summers (Green) 44 (2.8%);
2014	S2	55%	Jim Oberweis (R)	789	63.0%	Richard Durbin* (D)	391	31.2%	73 [+]	5.8%	1,253	20	0.03%
[-] Other candidates in 2014: Sharon Hansen (Libertarian) 72 (5.7%); Other (Write-in) 1 (0.1%);
2014	G	55%	Bruce Rauner (R)	894	71.1%	Pat Quinn* (D)	319	25.4%	44 [+]	3.5%	1,257	21	0.03%
[-] Other candidates in 2014: Chad Grimm (Libertarian) 42 (3.3%); Other (Write-in) 2 (0.2%);

*: incumbent +: ran on additional party lines Type: G: Governor; S1,S2,S3: Senate Class 1, 2 or 3
italics: special election RO: runoff election PSV: percent of state vote

Housing Data
	Number	%
Housing Units	1,042
Median Value	$319,900

Occupied	886	85.0%
Vacant	156	15.0%

Owned	811	91.5%
Rented	75	8.5%
Median Rent	n/a

Single-Family Units	1,042	100.0%
Detached	941	90.3%
Attached	101	9.7%
Buldings with 5+ Units	0	0.0%
Mobile Homes	0	0.0%

Seneca township, IL

Race Breakdown with Components of Population Change

Age, Family & Household Data for Seneca township, IL

2022 Housing Data for Seneca township, IL

2022 Income & Employment Data for Seneca township, IL

2022 Ancestry, Citizenship & Language Data for Seneca township, IL

2022 Educational Attainment Data for Seneca township, IL

Historical Presidential Election Results for Seneca township, IL

Historical Statewide Election Results for Seneca township, IL