Oswego Township, Kendall County, Illinois

Oswego Township is a township in Kendall County, Illinois. About 58,023 people live there (2020–2024 estimate). It covers 39.9 sq mi (103 km²) of land and uses Central Time. It has its own local government.

Chicago
Oswego Township in Illinois
Bristol Township
Oswego Township and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Population, 2020–2024 estimate
58,023 ± 52
County
Kendall County
School district
Oswego Community Unit School District 308
Land area
39.9 sq mi (103 km²)
Type
TownshipIts own local government
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$114,047 ± $3,917
Median home value
$316,700 ± $9,712
Water area
0.64 sq mi (1.66 km²)
State
Illinois
Census code (GEOID)
1709356900
Coordinates (central point)
41.675731, -88.318462

These coordinates mark a central point for the area, not a street address. Population, income and home value: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 20, 2026.

Cities, towns and communities in Oswego Township, largest first

  1. Oswego (village)36,375 people
  2. Montgomery (village)21,515 people
  3. Boulder Hill (CDP)8,989 people

These places’ central points lie inside Oswego Township. A place can reach across the line, and its government, if it has one, can be separate from the township’s.

Bordering areas, nearest first

  1. Na-Au-Say Township5.8 mi south
  2. Wheatland Township, Will County6.0 mi east
  3. Bristol Township6.2 mi west
  4. Aurora Township, Kane County6.4 mi north
  5. Kendall Township8.4 mi southwest

These towns, townships, cities and boroughs share a boundary with Oswego Township. Distances are straight lines between central points, not driving distances.

Other townships in Kendall County, largest first

  1. Bristol Township33,956 people
  2. Little Rock Township14,609 people
  3. Na-Au-Say Township11,001 people
  4. Kendall Township9,269 people
  5. Seward Township6,732 people
  6. Big Grove Township1,730 people
  7. Fox Township1,575 people
  8. Lisbon Township780 people

People counts are American Community Survey 2020–2024 5-year estimates. See Kendall County for its cities, ZIP Code areas and county seat.

Sunrise and sunset in Oswego Township

Longest day
15 hours 13 minutes around June 21
Shortest day
9 hours 9 minutes around December 21
Earliest sunrise
5:18 AM around June 15
Latest sunrise
7:31 AM the day before clocks go back in November
Earliest sunset
4:22 PM around December 8
Latest sunset
8:31 PM around June 27

Clocks go forward an hour on the second Sunday in March and back on the first Sunday in November, so sunrise and sunset jump an hour later in March and an hour earlier in November.

Sunrise and sunset on the 15th of each month
DaySunriseSunsetDaylight
Jan 157:17 AM4:47 PM9 h 30 min
Feb 156:48 AM5:26 PM10 h 38 min
Mar 157:05 AM6:59 PM11 h 54 min
Apr 156:13 AM7:33 PM13 h 20 min
May 155:33 AM8:06 PM14 h 33 min
Jun 155:18 AM8:29 PM15 h 11 min
Jul 155:31 AM8:26 PM14 h 55 min
Aug 156:01 AM7:53 PM13 h 52 min
Sep 156:33 AM7:02 PM12 h 29 min
Oct 157:05 AM6:12 PM11 h 7 min
Nov 156:42 AM4:33 PM9 h 51 min
Dec 157:13 AM4:23 PM9 h 10 min

Approximate times for a flat horizon at the central point; the days move by a day or so from year to year. Hills and weather can change what you see.

Before using this answer on a form

A township line is not always the line on your mail: a mailing address can name another town or post office, and school districts, ZIP Codes and tax districts follow their own lines. For taxes, voting or permits, check the full address with Kendall County or the local office.

Find the township or town where you are now or find your county.

See this area on Census.gov ↗