Windsor Township, Jefferson County, Missouri

Windsor Township is a township in Jefferson County, Missouri. About 22,366 people live there (2020–2024 estimate). It covers 15.6 sq mi (40.3 km²) of land and uses Central Time. It is a legal area with no government of its own.

Kansas CitySt. LouisSpringfield
Windsor Township in Missouri
Arnold TownshipImperial TownshipOakville Township
Windsor Township and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Population, 2020–2024 estimate
22,366 ± 1,362
County
Jefferson County
School district
Fox C-6 School District
Land area
15.6 sq mi (40.3 km²)
Type
TownshipNo government of its own
Time zone
Central TimeUTC-06:00 in January; UTC-05:00 in July
Median household income
$86,010 ± $6,760
Median home value
$238,600 ± $7,609
Water area
1.25 sq mi (3.23 km²)
State
Missouri
Census code (GEOID)
2909980370
Coordinates (central point)
38.404520, -90.400066

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 Windsor Township, largest first

  1. Imperial (CDP)5,488 people
  2. Kimmswick (city)112 people

These places’ central points lie inside Windsor 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. Arnold Township2.2 mi northeast
  2. Imperial Township3.9 mi southwest
  3. Rock Township5.5 mi northwest
  4. Oakville Township, St. Louis County5.5 mi northeast
  5. Tesson Ferry Township, St. Louis County6.1 mi north

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

Other townships in Jefferson County, largest first

  1. Rock Township34,422 people
  2. Imperial Township24,351 people
  3. Joachim Township21,970 people
  4. Arnold Township20,956 people
  5. Meramec Township19,708 people
  6. River View Township18,656 people
  7. High Ridge Township18,327 people
  8. Valle Township15,829 people
  9. Central Township14,773 people
  10. Plattin Township11,820 people
  11. Big River Township6,280 people

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

Sunrise and sunset in Windsor Township

Longest day
14 hours 50 minutes around June 21
Shortest day
9 hours 29 minutes around December 21
Earliest sunrise
5:37 AM around June 14
Latest sunrise
7:33 AM the day before clocks go back in November
Earliest sunset
4:40 PM around December 7
Latest sunset
8:29 PM around June 28

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 AM5:04 PM9 h 47 min
Feb 156:52 AM5:39 PM10 h 47 min
Mar 157:12 AM7:08 PM11 h 56 min
Apr 156:25 AM7:37 PM13 h 12 min
May 155:50 AM8:06 PM14 h 16 min
Jun 155:37 AM8:27 PM14 h 50 min
Jul 155:49 AM8:24 PM14 h 35 min
Aug 156:15 AM7:55 PM13 h 40 min
Sep 156:43 AM7:09 PM12 h 26 min
Oct 157:10 AM6:23 PM11 h 13 min
Nov 156:43 AM4:48 PM10 h 5 min
Dec 157:11 AM4:41 PM9 h 30 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 Jefferson County or the local office.

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

See this area on Census.gov ↗