Seneca

Population: 2,525
Median household income: $91,065
Median home value: $206,400

Seneca is a community in LaSalle County, Illinois, home to 2,525 residents. Its median household income of $91,065 runs above the LaSalle County figure of $72,281.

Between 2019 and 2023, Seneca's population grew 3.4% from 2,442 to 2,525, while its median home value rose 28.2% from $161,000 to $206,400.

Owners occupy 76.6% of the area's occupied homes. The median resident is 35.2 years old.

Demographics

ACS 2019–2023

Population: 2,525
Median age: 35.2 yrs
Median household income: $91,065
Median home value: $206,400
Median gross rent: $988
Housing units: 971
Homeownership rate: 76.6%
Bachelor's degree or higher: 12.9%
Unemployment rate: 4.2%

Trends

ACS 5-year · 2019–2023

Population

2,4422,525

Median household income

$72,273$91,065

Median home value

$161,000$206,400

Median gross rent

$741$988

Year	Population	Median household income	Median home value	Median gross rent
2019	2,442	$72,273	$161,000	$741
2020	2,534	$74,907	$169,200	$794
2021	2,648	$85,294	$169,900	$860
2022	2,565	$88,487	$192,100	$963
2023	2,525	$91,065	$206,400	$988

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 58.4%

5 to 1719.4%

18 to 247.0%

25 to 3415.0%

35 to 446.4%

45 to 5412.1%

55 to 6420.8%

65 to 747.0%

75 and over3.8%

	Count	Share
Under 5	212	8.4%
5 to 17	489	19.4%
18 to 24	176	7.0%
25 to 34	380	15.0%
35 to 44	162	6.4%
45 to 54	306	12.1%
55 to 64	526	20.8%
65 to 74	177	7.0%
75 and over	97	3.8%

Race & ethnicity

	Count	Share
White (non-Hispanic)	2,239	88.7%
Black or African American	28	1.1%
American Indian & Alaska Native	0	0.0%
Asian	0	0.0%
Native Hawaiian & Pacific Islander	0	0.0%
Some other race	0	0.0%
Two or more races	107	4.2%
Hispanic or Latino (any race)	151	6.0%

Educational attainment (age 25+)

No high school diploma5.3%

High school graduate40.8%

Some college or associate's41.0%

Bachelor's degree10.5%

Graduate or professional degree2.4%

	Count	Share
No high school diploma	87	5.3%
High school graduate	673	40.8%
Some college or associate's	676	41.0%
Bachelor's degree	173	10.5%
Graduate or professional degree	39	2.4%

Commute to work

Mean travel time to work: 30 min

Drove alone77.5%

Carpooled10.4%

Public transit0.0%

Walked5.1%

Bicycle0.0%

Worked from home6.3%

Other means0.7%

How workers get to work

	Count	Share
Drove alone	832	77.5%
Carpooled	112	10.4%
Public transit	0	0.0%
Walked	55	5.1%
Bicycle	0	0.0%
Worked from home	68	6.3%
Other means	7	0.7%

Travel time

	Count	Share
Under 15 min	252	25.0%
15 to 29 min	436	43.3%
30 to 44 min	126	12.5%
45 to 59 min	68	6.8%
60+ min	124	12.3%

Households

Average household size: 2.72
Poverty rate: 19.4% (489 of 2,525)

	Count	Share
Family households	684	73.8%
Nonfamily households	243	26.2%

Housing

Median year structure built: 1975

Occupancy

	Count	Share
Occupied	927	95.5%
Vacant	44	4.5%

Tenure (of occupied units)

	Count	Share
Owner-occupied	710	76.6%
Renter-occupied	217	23.4%

1-unit, detached77.8%

1-unit, attached4.3%

2 to 4 units8.4%

5 to 19 units2.8%

20 or more units0.0%

Mobile home & other6.7%

Units in structure

	Count	Share
1-unit, detached	755	77.8%
1-unit, attached	42	4.3%
2 to 4 units	82	8.4%
5 to 19 units	27	2.8%
20 or more units	0	0.0%
Mobile home & other	65	6.7%

Geography

Place GEOID: 1768640
Type (LSAD): 47
Land area: 6.2 sq mi
Water area: 0.37 sq mi
Center point: 41.3026, -88.6147