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CITY · 2010 ACS

Seneca

Illinois · 2,371 residents · 6.205 sq mi
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The short version

Seneca is wealthier than most US places, with a median household income of $60,023. Population has grown 15% since 2000. Median home value has risen by half since 2000, reaching $159,000.

At a glance
Wealthier
above the US median
US median: $52,703
Mid-age
median age 37.3
US median: 37.2
Less educated
19% hold a bachelor's degree
US average: 28%
Stable housing
home values roughly flat, inflation adjusted
US median home: $225,659
Section 01

Population & growth

Total population
2,371
+15%since 2000
from 2,053 in 2000
1990 – 2025
Population density
382 / sq mi
+15%since 2000
from 331 / sq mi in 2000
US average: 261
Median age
37.3
+4%since 2000
from 35.7 in 2000
US average: 37.2
Population, 1990 – 2024
2K2K2K2K3K1990201020202024Seneca
20242K
1990201020202024
Section 02

Income & economy

Median household income
$60,023
−9%inflation adjusted, since 2000
from $52,188 in 2000
US average: $52,703
1990 – 2024
Per capita income
$22,183
+15%since 2000
from $19,273 in 2000
US average: $27,286
Households earning $100K+
26.8%
−7.7 ptssince 2009
from 34.5% in 2009
US average: 33.3%
Poverty rate
7.7%
+0.4 ptssince 2000
from 7.3% in 2000
US average: 13.8%
Income inequality (Gini)
0.346
US average: 0.461
Workforce by industry, 2010
Retail trade17.2%
US avg: 10.9%
Information15.2%
US avg: 11.5%
Arts, entertainment, food8.1%
US avg: 2.4%
Finance & insurance6.6%
US avg: 5.1%
Wholesale trade4.9%
US avg: 7.2%
Other services3.9%
US avg: 7%
Education & health services3.6%
US avg: 0.9%
Public administration3.3%
US avg: 4.9%
Professional, scientific, technical3%
US avg: 4.2%
Transportation & warehousing1.5%
US avg: 3.1%
Agriculture, forestry, fishing0%
US avg: 1.9%
Construction0%
US avg: 1.4%
Manufacturing0%
US avg: 0.5%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$159,000
+19%inflation adjusted, since 2000
from $105,100 in 2000
US average: $225,659
1990 – 2024
Median gross rent
$661
+3%inflation adjusted, since 2000
from $505 in 2000
US average: $853
Owner-occupied
54.4%
−27.2 ptssince 2000
from 81.6% in 2000
18.4% rent
Vacancy rate
6.1%
+4.1 ptssince 2009
from 2.1% in 2009
US average: 12.1%
Owner cost-burdened
23.4%
+0.6 ptssince 2009
from 22.8% in 2009
US average: 30.9%
Renter cost-burdened
14.4%
−3.0 ptssince 2009
from 17.4% in 2009
US average: 46.8%
Afford Score
2.6
+32%since 2000
from 2.0 in 2000
1990 – 2024
RELATED:See current rent listings in Seneca on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic98%(2,011)
Black0%(0)
Hispanic / Latino1.5%(30)
Asian0%(1)
Other0%
Diversity Score3.7%(77)
2010
White, non-Hispanic93%(2,205)
Black0.5%(13)
Hispanic / Latino4%(96)
Asian0.4%(9)
Other1.5%(34)
Diversity Score15.4%(365)
Diversity Score
15
+312%since 2000
from 4 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
18.8%
+5.9 ptssince 2000
from 12.9% in 2000
US average: 27.9%
High school or higher
86.5%
+0.1 ptssince 2000
from 86.4% in 2000
US average: 84.9%
Graduate degree
5.9%
+1.6 ptssince 2000
from 4.3% in 2000
US average: 10.2%
Section 06

Commute & transportation

Average commute
24.4 min
+23%since 2000
from 19.8 min in 2000
US average: 25.2
Drive alone to work
94.6%
+4.2 ptssince 2009
from 90.3% in 2009
US average: 76.2%
Carpooled to work
5.0%
−1.0 ptssince 2009
from 6.0% in 2009
US average: 10.4%
Public transit
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 4.7%
Worked from home
0.4%
−2.5 ptssince 2009
from 2.9% in 2009
US average: 4.1%
Walked to work
0.0%
−0.8 ptssince 2009
from 0.8% in 2009
US average: 2.8%
Biked to work
0.0%
Unchangedsince 2009
from 0.0% in 2009
US average: 0.5%
No vehicle available
3.4%
+2.7 ptssince 2009
from 0.7% in 2009
US average: 8.7%
Section 07

Work & employment

Self-employed
18.6%
+1.3 ptssince 2009
from 17.3% in 2009
US average: 12.9%
Management & professional
27.7%
−34.8 ptssince 2009
from 62.5% in 2009
US average: 35.2%
Section 08

People & community

Male
49.8%
+0.4 ptssince 2009
from 49.4% in 2009
Female
50.2%
−0.4 ptssince 2009
from 50.6% in 2009
Foreign born
0.9%
+0.3 ptssince 2009
from 0.7% in 2009
US average: 12.8%
Veterans
8.9%
−39.7 ptssince 2009
from 48.6% in 2009
US average: 9.9%
Drill deeper

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Compare Seneca to nearby cities

SENECA VS
Morris
Income$76,711+28%
Home value$247,400+56%
Population14,669+535%
SEE FULL COMPARISON →
SENECA VS
Ottawa
Income$71,413+19%
Home value$154,000−3%
Population18,684+709%
SEE FULL COMPARISON →
SENECA VS
Streator
Income$57,609−4%
Home value$94,700−40%
Population12,190+428%
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SENECA VS
Minooka
Income$115,445+92%
Home value$315,600+98%
Population12,899+458%
SEE FULL COMPARISON →
Frequently asked

How many people live in Seneca, Illinois?

Seneca, Illinois has about 2,371 residents according to the 2010 American Community Survey.

What is the median household income in Seneca, Illinois?

The typical household in Seneca, Illinois earns about $60,023 a year. Half of households make more than that, and half make less.

Is Seneca, Illinois expensive?

In Seneca, Illinois, the median home is worth about $159,000, and the typical rent is about $661 a month.

How educated are people in Seneca, Illinois?

About 18.8% of adults age 25 and over in Seneca, Illinois hold a bachelor's degree or higher.

What is the poverty rate in Seneca, Illinois?

About 7.7% of people in Seneca, Illinois live below the federal poverty line.

Has Seneca, Illinois grown since 1990?

Yes, Seneca, Illinois has grown since 1990. The population has added about 512 residents, a change of about 28 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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