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Where am ILOCATED

Stephenson County, Illinois

Stephenson County, Illinois, has 43,220 residents (July 2025 estimate). Its county seat is Freeport. It uses Central Time and covers 564 sq mi (1,461 km²) of land.

ChicagoAurora
Stephenson County in Illinois
FreeportLenaLake SummersetOrangevilleWillow Lake
Stephenson County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
43,220
Land area
564 sq mi (1,461 km²)
County seat or government
Freeport
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$64,043 ± $3,674
Median home value
$134,900 ± $6,661
Median rent, with utilities
$798 ± $33
Homes lived in by their owners
70.9% ± 1.8 points
County type
County
Metro or micro area
Freeport, IL micro areaCentral county
Water area
0.52 sq mi (1.35 km²)
State
Illinois
County code (FIPS)
17177
Coordinates (central point)
42.349726, -89.665994
Open this point in the location finder

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Stephenson County

Time zoneLocal time and UTC offsetNext clock change
Central TimeAmerica/ChicagoUTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 6103229,020 people
  2. 610634,011 people
  3. 610483,786 people
  4. 610193,461 people
  5. 610621,840 people
  6. 610471,622 people
  7. 610871,588 people
  8. 610601,554 people
  9. 610781,459 people
  10. 610701,322 people
  11. 610181,034 people
  12. 61039824 people
All 19
  1. 61013690 people
  2. 61089526 people
  3. 61067450 people
  4. 61044225 people
  5. 61050199 people
  6. 61007196 people
  7. 6102733 people

19 ZIP Code areas overlap Stephenson County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

Stephenson County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Townships in Stephenson County, largest first

  1. Freeport Township23,505 people
  2. West Point Township3,130 people
  3. Rock Run Township2,162 people
  4. Harlem Township1,993 people
  5. Rock Grove Township1,537 people
  6. Oneco Township1,387 people
  7. Loran Township1,362 people
  8. Ridott Township1,301 people
  9. Lancaster Township1,296 people
  10. Florence Township1,250 people
  11. Buckeye Township1,242 people
  12. Dakota Township928 people
All 18
  1. Kent Township615 people
  2. Waddams Township519 people
  3. Winslow Township499 people
  4. Silver Creek Township462 people
  5. Erin Township423 people
  6. Jefferson Township157 people

People counts are American Community Survey 2020–2024 5-year estimates. All townships in Illinois, by county

School districts in Stephenson County, largest first

  1. Freeport School District 14527,859 people
  2. Winnebago Community Unit School District 3237,729 people
  3. Dakota Community Unit School District 2015,065 people
  4. Pecatonica Community Unit School District 3214,997 people
  5. Forrestville Valley Community Unit School District 2214,851 people
  6. Lena-Winslow Community Unit School District 2024,698 people
  7. Eastland Community Unit School District 3084,377 people
  8. Durand Community Unit School District 3223,725 people
  9. Warren Community Unit School District 2052,583 people
  10. Orangeville Community Unit School District 2032,319 people
  11. Pearl City Community Unit School District 2002,290 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Freeport, Illinois (city)23,505 people
  2. Lena, Illinois (village)2,761 people
  3. Lake Summerset, Illinois (CDP)2,364 people
  4. Orangeville, Illinois (village)1,045 people
  5. Willow Lake, Illinois (CDP)764 people
  6. Pearl City, Illinois (village)745 people
  7. Cedarville, Illinois (village)690 people
  8. Dakota, Illinois (village)645 people
  9. Davis, Illinois (village)535 people
  10. German Valley, Illinois (village)467 people
  11. Rock City, Illinois (village)441 people
  12. Winslow, Illinois (village)338 people
All 14
  1. Ridott, Illinois (village)130 people
  2. Baileyville, Illinois (CDP)99 people

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Green County, Wisconsin23 mi north
  2. Carroll County, Illinois23 mi southwest
  3. Winnebago County, Illinois26 mi east
  4. Ogle County, Illinois28 mi southeast
  5. Jo Daviess County, Illinois28 mi west
  6. Lafayette County, Wisconsin32 mi northwest

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.