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Big Sioux

A township of 4,917 people in Union County, South Dakota
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Now in Big Sioux

What’s happening this week

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What’s happening

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Weather

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Around town

Local news

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Headlines via Google News · Articles belong to their publishers.

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Around town

The places and views that make it Big Sioux

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Outdoors in Big Sioux

Parks & trails →
Conserved land19%1,457 of 7,745 acres
Trails22 mi1.9 mi per sq mi
Parks & preserves2296 conserved acres per 1,000 residents

Know a trail or park that’s missing? Anyone can add it to OpenStreetMap, and it shows up here on the next refresh.

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

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Know Big Sioux

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

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Living in Big Sioux

Work & commute in Big Sioux

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About one in 4 of Big Sioux’s working residents works in town. The top destinations are North Sioux City (17%), Sioux City (16%) and Dakota Dunes (16%). Half commute less than 5 miles.

North Sioux City
17%
Sioux City, IA
16%
Dakota Dunes
16%
Sioux Falls
9%
Census LEHD 2023 · ACSWork & commute in Big Sioux →

Health in Big Sioux

A

Health Grade A

Healthier than 91% of U.S. towns on seven CDC estimates.

Compared with South Dakota

13better than SD

of 26 measures CDC estimates. The other 13 are too close to call.

BetterToo close to callWorse

What stands out

Care nearby

St. Lukes Regional Medical CenterSioux City · 5.3 mi · ER
Siouxland Community Health Women's ClinicSioux City · 5.5 mi · sliding-scale fees
Primary careNo shortage
DentalNo shortage
Mental healthShortage · county-wide
CDC PLACES 2025 · modeled estimates for adults · ZIP code 57049 · CMS · HRSAHealth in Big Sioux →

Natural hazards in Big Sioux

FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Big Sioux →

Climate in Big Sioux

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Big Sioux has cold, snowy winters and warm summers. A typical July afternoon reaches 86°, a January night drops to 10°, and about 36 inches of snow falls in a normal winter.

32° / 13°Winter
61° / 37°Spring
84° / 61°Summer
62° / 38°Fall
NOAA U.S. Climate Normals, 1991–2020Climate in Big Sioux →

Libraries near Big Sioux

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Nearest: North Sioux City Community LibraryNorth Sioux City · 1.1 miles · 44 hrs a week
Famous people from Big SiouxWriters, athletes, leaders and more who were born in Big Sioux.Meet them →

How things work in Big Sioux

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The coffee’s on

Where to, neighbor?

You’re in Big Sioux, SDUnion CountyView boundary

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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/15 · 2025-01-01