Spring Valley Township, Dallas County, Iowa
Spring Valley Township is a township in Dallas County, Iowa. About 8,575 people live there (2020–2024 estimate). It covers 35.3 sq mi (91.5 km²) of land and uses Central Time. Its local government works under another unit of government.
- Population, 2020–2024 estimate
- 8,575 ± 180
- County
- Dallas County
- School district
- Perry Community School District
- Land area
- 35.3 sq mi (91.5 km²)
- Type
- TownshipGovernment under another
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $69,231 ± $7,400
- Median home value
- $130,700 ± $24,332
- Water area
- 0.38 sq mi (0.99 km²)
- State
- Iowa
- Census code (GEOID)
- 1904993993
- Coordinates (central point)
- 41.807182, -94.095507
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.
Census place in Spring Valley Township
- Perry (city)7,985 people
This place’s central point lies inside Spring Valley 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
- Washington Township4.9 mi south
- Beaver Township5.1 mi east
- Union Township, Boone County6.9 mi north
- Dallas Township7.0 mi west
These towns, townships, cities and boroughs share a boundary with Spring Valley Township. Distances are straight lines between central points, not driving distances.
Other townships in Dallas County, largest first
- Walnut Township39,414 people
- Boone Township35,220 people
- Adel Township8,489 people
- Van Meter Township5,253 people
- Union Township2,076 people
- Des Moines Township2,005 people
- Grant Township1,839 people
- Adams Township1,791 people
- Sugar Grove Township962 people
- Linn Township694 people
- Beaver Township507 people
- Colfax Township336 people
All 15
- Washington Township302 people
- Lincoln Township257 people
- Dallas Township248 people
People counts are American Community Survey 2020–2024 5-year estimates. See Dallas County for its cities, ZIP Code areas and county seat.
Sunrise and sunset in Spring Valley Township
- Longest day
- 15 hours 13 minutes around June 21
- Shortest day
- 9 hours 8 minutes around December 21
- Earliest sunrise
- 5:40 AM around June 15
- Latest sunrise
- 7:54 AM the day before clocks go back in November
- Earliest sunset
- 4:45 PM around December 8
- Latest sunset
- 8:55 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.
| Day | Sunrise | Sunset | Daylight |
|---|---|---|---|
| Jan 15 | 7:41 AM | 5:10 PM | 9 h 29 min |
| Feb 15 | 7:12 AM | 5:49 PM | 10 h 37 min |
| Mar 15 | 7:28 AM | 7:22 PM | 11 h 54 min |
| Apr 15 | 6:36 AM | 7:57 PM | 13 h 21 min |
| May 15 | 5:56 AM | 8:29 PM | 14 h 33 min |
| Jun 15 | 5:40 AM | 8:53 PM | 15 h 13 min |
| Jul 15 | 5:54 AM | 8:49 PM | 14 h 55 min |
| Aug 15 | 6:24 AM | 8:16 PM | 13 h 52 min |
| Sep 15 | 6:56 AM | 7:26 PM | 12 h 30 min |
| Oct 15 | 7:28 AM | 6:35 PM | 11 h 7 min |
| Nov 15 | 7:05 AM | 4:55 PM | 9 h 50 min |
| Dec 15 | 7:36 AM | 4:46 PM | 9 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 Dallas County or the local office.
Find the township or town where you are now or find your county.