Eureka Township, Aurora County, South Dakota
Eureka Township is a township in Aurora County, South Dakota. About 8 people live there (2020–2024 estimate). It covers 34.3 sq mi (88.9 km²) of land and uses Central Time. It has its own local government.
- Population, 2020–2024 estimate
- 8 ± 7
- County
- Aurora County
- School district
- Plankinton School District 01-1
- Land area
- 34.3 sq mi (88.9 km²)
- Type
- TownshipIts own local government
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Water area
- 0.08 sq mi (0.21 km²)
- State
- South Dakota
- Census code (GEOID)
- 4600320100
- Coordinates (central point)
- 43.715618, -98.635047
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
- White Lake Township5.4 mi west
- Crystal Lake Township5.8 mi south
- Plankinton Township7.0 mi east
- Cooper Township7.5 mi north
These towns, townships, cities and boroughs share a boundary with Eureka Township. Distances are straight lines between central points, not driving distances.
Other townships in Aurora County, largest first
- Plankinton Township295 people
- Aurora Township124 people
- Patten Township97 people
- White Lake Township96 people
- Lake Township83 people
- Truro Township68 people
- Belford Township64 people
- Palatine Township59 people
- Gales Township57 people
- Washington Township52 people
- Dudley Township50 people
- Crystal Lake Township43 people
All 19
- Center Township40 people
- Firesteel Township40 people
- Hopper Township39 people
- Pleasant Lake Township33 people
- Bristol Township22 people
- Pleasant Valley Township16 people
- Cooper Township0 people
People counts are American Community Survey 2020–2024 5-year estimates. See Aurora County for its cities, ZIP Code areas and county seat.
Sunrise and sunset in Eureka Township
- Longest day
- 15 hours 27 minutes around June 21
- Shortest day
- 8 hours 56 minutes around December 21
- Earliest sunrise
- 5:52 AM around June 15
- Latest sunrise
- 8:16 AM the day before clocks go back in November
- Earliest sunset
- 4:57 PM around December 9
- Latest sunset
- 9:20 PM around June 26
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 | 8:05 AM | 5:23 PM | 9 h 18 min |
| Feb 15 | 7:33 AM | 6:04 PM | 10 h 31 min |
| Mar 15 | 7:46 AM | 7:40 PM | 11 h 54 min |
| Apr 15 | 6:51 AM | 8:18 PM | 13 h 27 min |
| May 15 | 6:09 AM | 8:53 PM | 14 h 44 min |
| Jun 15 | 5:52 AM | 9:18 PM | 15 h 26 min |
| Jul 15 | 6:06 AM | 9:14 PM | 15 h 8 min |
| Aug 15 | 6:38 AM | 8:38 PM | 14 h |
| Sep 15 | 7:13 AM | 7:44 PM | 12 h 31 min |
| Oct 15 | 7:48 AM | 6:51 PM | 11 h 3 min |
| Nov 15 | 7:28 AM | 5:09 PM | 9 h 41 min |
| Dec 15 | 8:01 AM | 4:58 PM | 8 h 57 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 Aurora County or the local office.
Find the township or town where you are now or find your county.