Skip to content

Checked

Rochester, IL

Village in Sangamon County, Illinois.

Population

3,766

Land area

2.7sq mi

People per sq mi

1,404

ZIP codes

0

Rochester and its ZIP codes

Full map

Rochester at a glance

  • Rochester is about 6.1 times as dense as Illinois as a whole.
  • Households here earn a median of $117,118 a year, 40% more than the Illinois figure of $83,390.
  • A typical owner-occupied home is valued at $238,900 (9% below Illinois) and median rent is $1,288 a month.

Local data for Rochester, IL

Counts from official public data

Housing and community stats

Rochester, IL, American Community Survey 2020-2024

Full profile

Median household income

$117,118

Poverty rate

2.5%

Median home value

$238,900

Median rent

$1,288/mo

Homeownership

93.3%

Bachelor's or higher

47.9%

Median age

39.8

Average commute

22.8 min

Largest reported origins and ancestries: German Americans (997), Irish Americans (492), Italian Americans (288).

Home values and rentsIncome, education and commute

Economy and federal money

Jobs, pay, income and spending are for Sangamon County. PPP loans are for Rochester.

Details

Unemployment rate

3.8%

Aug 2026, -0.9 pts in a year

Average annual pay

$72,668

130,936 jobs, 2025

Income per person

$63,581

BEA, 2024

Federal spending

$3.3B

FY 2026, $16,718 per person

Sangamon County economyFederal spending

How people get to work

Rochester, IL, workers 16 and older. American Community Survey 5-year estimates

  • Drove alone72.3%
  • Carpooled7.2%
  • Public transit0.0%
  • Walked0.6%
  • Bicycle0.0%
  • Taxi, ride-hailing, motorcycle or other0.8%
  • Worked from home19.1%

Average one-way commute: 22.8 minutes for people who do not work from home.

Environment and hazard risk

Rochester, IL, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Moderate

Top: tornado

Storm events since 1996

947

Countywide, mostly thunderstorm wind

Flood insurance policies

167

0.2% of homes, county

July high / Jan low

86° / 19°F

40.4 inches of rain a year

Hazards, floods and storm historyCheck a flood zone

Health statistics

Share of adults in Rochester, IL, CDC PLACES estimates

All 40 measures

Obesity

35.5%

U.S. 33.3% +2.2 pts

Diabetes

9.4%

U.S. 12.1% -2.7 pts

Smoking

10.1%

U.S. 12.8% -2.7 pts

Uninsured (18-64)

4.9%

U.S. 11.1% -6.2 pts

Cities near Rochester

NameDistanceLand area (sq mi)
Southern ViewVillage6.4 mi0.7
RivertonVillage6.4 mi3.2
GrandviewVillage6.5 mi0.3
JeromeVillage7.7 mi0.5
Leland GroveCity8.1 mi0.6
SpauldingVillage8.1 mi0.8
MechanicsburgVillage8.1 mi1
DawsonVillage8.3 mi0.8
SpringfieldCity9.2 mi61.3
ChathamVillage9.5 mi7.4
BuffaloVillage9.6 mi0.3
EdinburgVillage9.8 mi0.6
ShermanVillage11 mi3.1
PawneeVillage11 mi1.3
ToveyVillage12 mi0.2
BulpittVillage12 mi0.1

Frequently asked questions

What county is Rochester, IL in?
Rochester is in Sangamon County, Illinois.
What is the population of Rochester, IL?
About 3,766 people live in Rochester, based on American Community Survey 5-year estimates.
What cities are near Rochester?
Nearby places include Southern View (6.4 mi), Riverton (6.4 mi), Grandview (6.5 mi), Jerome (7.7 mi), Leland Grove (8.1 mi).

Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023