The Delmont Pumphouse is a historic waterworks facility and fire station on West Main Street in Delmont, South Dakota. It is a single-story brick structure, built in 1903 by the city to house a compression tank for its water supply.

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5 on the National Register · #31 in SDHistoric places →

Know Delmont

The town at a glance, and the guide to how things work

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About Delmont

City in South Dakota, United States

153Population

0.8 sq miArea

1,493 ftElevation

Delmont is a city in southeastern Douglas County, South Dakota, United States. The population was 153 at the 2020 census. Delmont was laid out in 1886. The Onion House, named for his onion shaped metallic dome and located in Delmont, is listed on the list of National Register of Historic Places since 1987. Also included on the same historic marker is Bluebird Locker, a local business in Delmont known for its “Delmont Sausage” but also serves as a butchery for other types of meats.

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Town numbers

ZIP code57330

Area code605

Living in Delmont

Work & commute in Delmont

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Most working residents leave Delmont for work: only 0% work in town. The top destinations are Corsica (21%), Armour (13%) and Parkston (8%). Half commute less than 17 miles.

Corsica

21%

Armour

13%

Parkston

Sioux Falls

0%Work in townlive and work in Delmont 17 miWhere do people commute?the commute map 16Jobs based herea commuter town

Census LEHD 2023 · ACSWork & commute in Delmont →

Health in Delmont

Compared with South Dakota

5better than SD·9worse

of 26 measures CDC estimates. The other 12 are too close to call.

Conditions 8▼ 4 close Habits 1▲ 3 close Care 4▲ 3 close Mind 1▼ 2 close

BetterToo close to callWorse

What stands out

14.8%Fewer binge drinkersSD 18.8% · better 82.5%More adults treating high blood pressureSD 75.9% · better 10.5%More adults with COPDSD 6.7% · worse

Care nearby

Douglas County Memorial Hospital-CahArmour · 10.2 mi · ER · rural critical access

Access Health - MitchellMitchell · 30.1 mi · sliding-scale fees

Primary careShortage · county-wide

DentalNo shortage

Mental healthShortage · county-wide

CDC PLACES 2025 · modeled estimates for adults · CDC's estimate for Delmont · CMS · HRSAHealth in Delmont →

Natural hazards in Delmont

Low

Expected storm and flood damage is higher than in 35% of U.S. communities.

🥶 Cold waves🌊 Inland flooding🌪️ Tornadoes

0Does Delmont flood?no paid flood claims on record 2Disasters that paid out herefederal disasters sent FEMA money to Delmont

FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Delmont →

Climate in Delmont

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Delmont has cold, snowy winters and warm summers. A typical July afternoon reaches 87°, a January night drops to 10°, and about 34 inches of snow falls in a normal winter.

32° / 12°Winter

59° / 35°Spring

84° / 60°Summer

61° / 37°Fall