O'Fallon Township, St. Charles County, Missouri
O'Fallon Township is a township in St. Charles County, Missouri. About 30,473 people live there (2020–2024 estimate). It covers 10.9 sq mi (28.2 km²) of land and uses Central Time. It is a legal area with no government of its own.
- Population, 2020–2024 estimate
- 30,473 ± 1,593
- County
- St. Charles County
- School district
- Fort Zumwalt R-II School District
- Land area
- 10.9 sq mi (28.2 km²)
- Type
- TownshipNo government of its own
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $82,035 ± $5,884
- Median home value
- $248,500 ± $7,666
- State
- Missouri
- Census code (GEOID)
- 2918354080
- Coordinates (central point)
- 38.801324, -90.657429
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.
Bordering areas, nearest first
- Dardenne Township2.8 mi southwest
- St. Peters Township3.7 mi southeast
- Spencer Creek Township4.5 mi southeast
- Cottleville Township6.0 mi south
- Wentzville Township9.0 mi west
- Rivers Township12 mi northeast
These towns, townships, cities and boroughs share a boundary with O'Fallon Township. Distances are straight lines between central points, not driving distances.
Other townships in St. Charles County, largest first
- Boone Township63,853 people
- Wentzville Township57,686 people
- Lake St. Louis Township30,539 people
- Dardenne Township26,384 people
- Rivers Township26,342 people
- Cottleville Township25,182 people
- Frontier Township25,144 people
- Weldon Spring Township24,884 people
- Lindenwood Township22,122 people
- Spencer Creek Township21,513 people
- Harvester Township21,238 people
- Zumbehl Township20,071 people
All 13
- St. Peters Township19,104 people
People counts are American Community Survey 2020–2024 5-year estimates. See St. Charles County for its cities, ZIP Code areas and county seat.
Sunrise and sunset in O'Fallon Township
- Longest day
- 14 hours 54 minutes around June 21
- Shortest day
- 9 hours 27 minutes around December 21
- Earliest sunrise
- 5:37 AM around June 14
- Latest sunrise
- 7:34 AM the day before clocks go back in November
- Earliest sunset
- 4:40 PM around December 7
- Latest sunset
- 8:31 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.
| Day | Sunrise | Sunset | Daylight |
|---|---|---|---|
| Jan 15 | 7:19 AM | 5:04 PM | 9 h 45 min |
| Feb 15 | 6:53 AM | 5:40 PM | 10 h 47 min |
| Mar 15 | 7:14 AM | 7:09 PM | 11 h 55 min |
| Apr 15 | 6:26 AM | 7:39 PM | 13 h 13 min |
| May 15 | 5:50 AM | 8:08 PM | 14 h 18 min |
| Jun 15 | 5:37 AM | 8:29 PM | 14 h 52 min |
| Jul 15 | 5:49 AM | 8:27 PM | 14 h 38 min |
| Aug 15 | 6:16 AM | 7:57 PM | 13 h 41 min |
| Sep 15 | 6:43 AM | 7:11 PM | 12 h 28 min |
| Oct 15 | 7:11 AM | 6:24 PM | 11 h 13 min |
| Nov 15 | 6:44 AM | 4:49 PM | 10 h 5 min |
| Dec 15 | 7:13 AM | 4:41 PM | 9 h 28 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 St. Charles County or the local office.
Find the township or town where you are now or find your county.