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South Dakota›Day County

Union TownshipSD

A town of 70.

Is Union Township a good place to live?

Union Township’s median age is 70.1 years, above both South Dakota’s towns (39.5 years) and U.S. towns (40.5 years). Of the 36 South Dakota towns we compare, none has a lower share of adults with a bachelor’s degree than Union Township. The biggest park or preserve is Pierpont Lake Recreation Area, at 152 acres. Union Township has fewer than 1,000 residents, too few for fair grades; the figures below are still real.

Small town

70 people, and everyone knows the way

In a town this size, neighbors are the best guide. Ask them anything.

Nearby towns
Andover TownshipLynn TownshipBristol TownshipHomer TownshipAndover TownshipLynn TownshipBristol TownshipHomer TownshipUnion Township
Getting set up

Moving to Union Township: who provides what

Who provides power, water and the rest in Union Township, and how to reach them.

The full setup list →
PowerNorthWestern Energy13.3¢/kWh · EIA 2025HIFLD · EIA
WaterWEB WaterNo health-based violations in 5 years · EPAEPA
Internet2 providers94% of addresses get 100/20 MbpsFCC
Trash & dumpNot on file yetWe don’t have Union Township’s trash rules yet
SchoolsGroton Area School District 06-6Langford School District 45-52 districts serve Union Township; which school depends on your address and gradeNCES
Register to voteIn personSouth Dakota has no online registration; you can register in person until 15 days before Election Day or by mail (received 15 days before).vote.gov
Who runs elections hereDay County AuditorDay County; contacts on the Handbook page.FVAP, Jul 2023
ZIP codes57468, 57219, 5742257468 60% · 57219 29% · 57422 11%Census 2020

EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Aug 3, 2026.

The data

Ordered by what stands out in Union Township.

Natural hazards

Union Township stands out in South Dakota and nationally, with the FEMA risk score lower than most

At 18 of 100, Union Township’s FEMA risk score is below both the South Dakota town median (54 of 100) and the median of U.S. towns (44 of 100).

18risk score of 100
FEMA risk score
18Very low riskLowerHigher
Cold wavesInland floodingStrong wind

FEMA National Risk Index · OpenFEMA

Climate

A typical July afternoon in Union Township is cooler than in most of South Dakota or the rest of the country

The July high in Union Township is 81°F. Union Township has cold, snowy winters and pleasant summers.

43″snow a winter

Typical low → high °F

Winter6–23°
Spring32–52°
Summer58–79°
Fall35–55°
Oct 4
typical first frost
May 6
typical last frost
+1.1°
vs. the 20th-century average

NOAA U.S. Climate Normals, 1991–2020

Health

How healthy Union Township is

Union Township beats the South Dakota average on 2 of 26 CDC measures and trails it on 8. 14% of Union Township adults have diabetes. Only 2 of the 36 South Dakota towns we compare have a higher share of adults who have high blood pressure than Union Township.

Union TownshipSouth Dakota townsU.S. towns
Diabetes (CDC PLACES)14%10%12%
High blood pressure (CDC PLACES)39%31%35%
Sleep under 7 hours (CDC PLACES)29%30%36%
Depression (CDC PLACES)20%22%23%
26 measures vs. South Dakota
2 better16 too close to call8 worse
What stands outUnion TownshipSD
More adults treating high blood pressure80.1%75.9%
More adults getting cholesterol checked87.7%84.8%
More adults with heart disease9%6.8%
Sanford Hospital Webster - Cah
15 mi away · emergency room
3 of 3
care shortages: primary care, dental, mental health

CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA

Outdoors

Conserved land covers 8.9% of Union Township

2.6 miles of trail in 1 park or preserve. Among 33 South Dakota towns, just 3 have a lower trail density than Union Township.

8.9%conserved
Union TownshipSouth Dakota townsU.S. towns
Conserved land8.9%3.3%4.3%
Miles of trail per square mile0.1 miles per square mile0.60.4
8.9%
conserved · 2,014 of 22,687 acres
2.6 mi
of trails · 0.1 per sq mi
Biggest places to walkTrailsAcres
1. Pierpont Lake Recreation Area—152

Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US

Keep exploring

Everything we know about Union Township

15pages on Union Township
After high school

Colleges nearby

None within 15 miles of Union Township; the nearest are

Questions about Union Township

Short answers, built from the data on this page.

Is Union Township, SD a good place to live?

Union Township has fewer than 1,000 residents, too few for fair grades; the figures below are still real.