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Towns / Illinois

Rochester, Illinois

Rochester is a suburb of about 4,100 people in Sangamon County, Illinois, in the Springfield area. It has grown about 6% since 2020. A typical home costs about 2 years of the typical household's income, compared with 4.1 across the U.S. The nearest metro area of about a million people or more, St. Louis, is about 86 miles away as the crow flies.

Suburb of Springfield

Population
4,093
up 5.9% since 2020
Typical home, 2020-24
$238,900
Sangamon County prices up 19% since 2022
Household income
$117,118
U.S.: $80,734
Prices, Springfield area
92.7
U.S. average = 100
Emergency room
8 miles
Springfield, IL
To St. Louis
86 mi
straight line

The book's checklist

  • Lower cost of livingEveryday prices run 7.3% below the U.S. average in the Springfield metro area.
  • More house for the moneyA typical home costs 2 years of the typical household's income here. Across the U.S. it's 4.1.
  • A safer neighborhood4 violent crimes were reported in 2025, about 1 per 1,000 people (U.S.: 3.3). Property crime: 3.7 per 1,000 (U.S.: 15.3).
  • Schools in town5 public schools: 2 elementary, 2 middle and 1 high school.
  • A hospital close bySt. Johns Hospital in Springfield, about 8 miles away, has the nearest emergency room.
  • Within reach of a big citySt. Louis is about 86 miles away as the crow flies. The book suggests staying within about 60 miles if you'll miss big-city sports, concerts and theater.

A check means Rochester meets the rule of thumb from Frank and Dave's book. An empty box isn't a deal breaker: it's something to weigh for your family. A question mark means there isn't enough data.

What kind of town

A suburb, not a stand-alone small town

Rochester runs into the built-up area around Springfield (Census Bureau, 2020 urban areas). We include suburbs under 20,000 people because some still feel like small towns, but daily life here is closer to the suburbs than to the towns Frank and Dave's book describes. Weigh it against towns farther out.

The book sorts small towns into six types. These labels come only from the numbers; take the quiz to see which type fits your family.

For a lifetime

Homes and money

Typical home value, as owners valued them in 2020-2024
$238,900U.S.: $332,700
Home prices since then
Up 19%Sangamon County, 2022 to 2025
Typical rent, with utilities
$1,288 a monthU.S.: $1,413
Typical household income
$117,118U.S.: $80,734
Homes owned by the people living in them
93%U.S.: 65%
Typical property tax bill
$4,564 a yearIllinois: $5,298
Homes built before 1940
6%U.S.: 12%
Homes built since 2010
15%U.S.: 11%
Vacation and seasonal homes
0%U.S.: 3%
Everyday prices
92.7U.S. average = 100 (the Springfield metro area)

Home values and rents are what households told the Census Bureau across 2020 to 2024, so they trail today's market: county prices have moved up 19% since 2022. Everyday prices are the government's average for the Springfield metro area, not Rochester alone. Check current listings before you budget.

Sources: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates; Federal Housing Finance Agency, House Price Index for counties (all transactions); U.S. Bureau of Economic Analysis, Regional Price Parities, 2024.

The people

Population, 2025 estimate
4,0932020: 3,863
Median age
39.8 yearsU.S.: 38.9
Age 65 and older
19%U.S.: 17%
Under 18
25%U.S.: 22%
Adults with a bachelor's degree or more
48%U.S.: 36%
Moved here from another county or state in the past year
3%U.S.: 6%

Sources: U.S. Census Bureau, Population Estimates (Vintage 2025); U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.

Work

Biggest lines of work
Schools, health care and social services (31%); government (18%); finance, insurance and real estate (11%)
Unemployment rate
3%U.S.: 5%
Average commute
23 minutesU.S.: 26 minutes
Work from home
19%U.S.: 15%
Below the poverty line
3%U.S.: 12%

Sources: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.

Health care

Nearest emergency room: St. Johns Hospital, Springfield, IL, about 8 miles away. It's a general hospital. Medicare gives it 2 of 5 stars.

Look up doctors, clinics and the hospitals themselves on Medicare's Care Compare. Ask where the most serious cases are sent.

Sources: Centers for Medicare & Medicaid Services, Hospital General Information.

Schools

5 public schools in Rochester, run by Rochester CUSD 3A.

See each school on the federal school search, then check test scores and graduation rates on Illinois's school report card.

Sources: National Center for Education Statistics, Common Core of Data, 2023-24 (via the Urban Institute Education Data Portal); National Center for Education Statistics, IPEDS institution directory, 2024.

Internet

Homes with cable, fiber or DSL internet
86%U.S.: 76%
Homes with any internet subscription
95%U.S.: 91%

Before you buy, look up the address on the FCC's National Broadband Map to see which providers serve it.

Sources: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.

Weather

January average low
19°F
July average high
86°F
Days 90°F or hotter
23 a year
Nights at or below freezing
114 a year
Rain and melted snow
40.7 inches a year
Snow
14 inches a year
Elevation
579 feet

Weather stations: Springfield #2 (9 miles away) and Kincaid 3W (11 miles away, rain and snow). Averages for 1991 to 2020.

Sources: NOAA National Centers for Environmental Information, U.S. Climate Normals 1991-2020; U.S. Geological Survey, 3D Elevation Program.

Getting around

Straight-line miles. The road is always longer, and as the book says, an interstate at 70 is a different trip from a farm road at 45. Check the real drive: St. Johns Hospital, Springfield, St. Louis.

Sangamon County is in a metro area of fewer than 250,000 people (USDA rural-urban code 3, on a scale where 1 is the biggest metro areas and 9 the most rural counties).

For a day

4 places on the National Register of Historic Places.

National Park Service sites within about an hour:

  • Lincoln Home National Historic Site8 miles
  • Springfield 1908 Race Riot National Monument8 miles

Read about Rochester's history on Wikipedia.

Know Rochester?

Tell us what a visitor shouldn't miss, and what living there is really like. Write to Main Street at mainstreet@smalltownguide.com. The best notes from people who know the town will be added here.

Nearby

Straight-line miles.

Small towns

Smaller places

  • Mechanicsburg, IL661 people, 7 miles
  • Dawson, IL507 people, 8 miles
  • Spaulding, IL790 people, 9 miles
  • Buffalo, IL437 people, 10 miles
  • Tovey, IL445 people, 11 miles
  • Bulpitt, IL204 people, 12 miles
  • Curran, IL209 people, 14 miles
  • Mount Auburn, IL441 people, 14 miles

Sources

  1. U.S. Census Bureau, Population Estimates (Vintage 2025)
  2. U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates
  3. Federal Housing Finance Agency, House Price Index for counties (all transactions)
  4. U.S. Bureau of Economic Analysis, Regional Price Parities, 2024
  5. FBI, Crime in the United States, Table 8 (offenses known to law enforcement by city)
  6. Centers for Medicare & Medicaid Services, Hospital General Information
  7. National Center for Education Statistics, Common Core of Data, 2023-24 (via the Urban Institute Education Data Portal)
  8. National Center for Education Statistics, IPEDS institution directory, 2024
  9. NOAA National Centers for Environmental Information, U.S. Climate Normals 1991-2020
  10. U.S. Geological Survey, 3D Elevation Program
  11. National Park Service, National Register of Historic Places listings
  12. National Park Service, park unit boundaries
  13. USDA Economic Research Service, Rural-Urban Continuum Codes, 2023
  14. U.S. Census Bureau, 2025 Gazetteer files and 2020 urban areas

Census survey figures are estimates with a margin of error; we leave out any figure whose margin is too wide to be useful. Data last gathered October 5, 2026. See something wrong? Write to mainstreet@smalltownguide.com.