Rochester

Population: 3,784
Median household income: $112,689
Median home value: $241,900

Rochester, a community in Sangamon County, Illinois, has 3,784 residents. At $112,689, its median household income sits above Sangamon County's $74,114.

From 2019 to 2023, Rochester's population held roughly steady from 3,801 to 3,784, while its median home value rose 24.9% from $193,600 to $241,900.

2.1% of residents live below the poverty line. Households average 2.74 people.

Demographics

ACS 2019–2023

Population: 3,784
Median age: 39.2 yrs
Median household income: $112,689
Median home value: $241,900
Median gross rent: $1,333
Housing units: 1,447
Homeownership rate: 96.0%
Bachelor's degree or higher: 49.9%
Unemployment rate: 3.6%

Trends

ACS 5-year · 2019–2023

Population

3,8013,784

Median household income

$96,111$112,689

Median home value

$193,600$241,900

Median gross rent

$1,085$1,333

Year	Population	Median household income	Median home value	Median gross rent
2019	3,801	$96,111	$193,600	$1,085
2020	3,778	$95,463	$206,300	$1,022
2021	3,940	$105,140	$207,900	$1,078
2022	3,752	$107,800	$225,800	$1,201
2023	3,784	$112,689	$241,900	$1,333

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

Age distribution

Under 55.0%

5 to 1719.6%

18 to 248.1%

25 to 3410.0%

35 to 4413.3%

45 to 5412.8%

55 to 6411.1%

65 to 7413.2%

75 and over6.8%

	Count	Share
Under 5	189	5.0%
5 to 17	743	19.6%
18 to 24	307	8.1%
25 to 34	379	10.0%
35 to 44	505	13.3%
45 to 54	484	12.8%
55 to 64	421	11.1%
65 to 74	498	13.2%
75 and over	258	6.8%

Race & ethnicity

	Count	Share
White (non-Hispanic)	3,530	93.3%
Black or African American	15	0.4%
American Indian & Alaska Native	0	0.0%
Asian	97	2.6%
Native Hawaiian & Pacific Islander	0	0.0%
Some other race	0	0.0%
Two or more races	78	2.1%
Hispanic or Latino (any race)	64	1.7%

Educational attainment (age 25+)

No high school diploma1.7%

High school graduate23.3%

Some college or associate's25.1%

Bachelor's degree32.4%

Graduate or professional degree17.5%

	Count	Share
No high school diploma	44	1.7%
High school graduate	592	23.3%
Some college or associate's	639	25.1%
Bachelor's degree	825	32.4%
Graduate or professional degree	445	17.5%

Commute to work

Mean travel time to work: 19 min

Drove alone76.9%

Carpooled6.9%

Public transit0.0%

Walked0.6%

Bicycle0.0%

Worked from home15.7%

Other means0.0%

How workers get to work

	Count	Share
Drove alone	1,320	76.9%
Carpooled	118	6.9%
Public transit	0	0.0%
Walked	10	0.6%
Bicycle	0	0.0%
Worked from home	269	15.7%
Other means	0	0.0%

Travel time

	Count	Share
Under 15 min	263	18.2%
15 to 29 min	1,054	72.8%
30 to 44 min	98	6.8%
45 to 59 min	25	1.7%
60+ min	8	0.6%

Households

Average household size: 2.74
Poverty rate: 2.1% (80 of 3,760)

	Count	Share
Family households	1,098	79.4%
Nonfamily households	285	20.6%

Housing

Median year structure built: 1985

Occupancy

	Count	Share
Occupied	1,383	95.6%
Vacant	64	4.4%

Tenure (of occupied units)

	Count	Share
Owner-occupied	1,327	96.0%
Renter-occupied	56	4.0%

1-unit, detached87.6%

1-unit, attached11.1%

2 to 4 units0.3%

5 to 19 units0.0%

20 or more units0.9%

Mobile home & other0.0%

Units in structure

	Count	Share
1-unit, detached	1,268	87.6%
1-unit, attached	161	11.1%
2 to 4 units	5	0.3%
5 to 19 units	0	0.0%
20 or more units	13	0.9%
Mobile home & other	0	0.0%

Geography

Place GEOID: 1764759
Type (LSAD): 47
Land area: 2.68 sq mi
Water area: 0 sq mi
Center point: 39.7428, -89.5217