Postal Codes

57346 ZIP Code

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ZIP code 57346 covers Stephan, South Dakota.

Time zone
Central UTC-06:00observes daylight saving time

Where 57346 is

Stephan, South Dakota — the point the Postal Service gives for this ZIP code. A ZIP code is a set of delivery routes rather than an area, so this marks its centre, not its boundary.

Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 88.8% of US census tracts
FEMA ratingRelatively High
Expected annual loss82.3 out of 100
Community resilience70.9 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Cold wave98.4Very High at its worst in this ZIP code
Wildfire98.4Relatively High at its worst in this ZIP code
Winter weather95.5Relatively High at its worst in this ZIP code
Drought95.3Relatively Moderate at its worst in this ZIP code
Hail91.9Relatively High at its worst in this ZIP code
Ice storm91.1Relatively High at its worst in this ZIP code
River flooding88.1Relatively High at its worst in this ZIP code
Strong wind83.9Relatively High at its worst in this ZIP code
Tornado73.9Relatively Moderate at its worst in this ZIP code
Landslide43.3Very Low at its worst in this ZIP code
Heat wave29.1Relatively Low at its worst in this ZIP code
Earthquake25.7Very Low at its worst in this ZIP code
Lightning16.2Very Low at its worst in this ZIP code
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationSTEPHAN 2 NW, SD US2.2 km away
Rain in a year21 in
Snow in a year37 in

Average high and low by month

January25.9°F / 5°F0.47 in rain, 6 in snow
February30.7°F / 8.3°F0.66 in rain, 9.3 in snow
March43.7°F / 18.9°F0.98 in rain, 6.5 in snow
April56.8°F / 30.7°F1.95 in rain, 4.4 in snow
May68.4°F / 43.2°F3.18 in rain
June78.5°F / 54°F3.8 in rain
July85.3°F / 59.6°F2.89 in rain
August83.9°F / 57.5°F2.17 in rain
September76.1°F / 47.3°F1.95 in rain
October60.2°F / 33°F1.89 in rain, 1.1 in snow
November43.9°F / 19.7°F0.63 in rain, 5 in snow
December30.5°F / 9.7°F0.6 in rain, 4.3 in snow
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Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarketNone of this ZIP code
Far from a supermarketNone of this ZIP code
No vehicle and far from a supermarketNone of this ZIP code
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

Highmore-Harrold School District 34-2100% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability16more vulnerable than 16% of US census tracts
Socioeconomic status19more vulnerable than 19% of US census tracts
Household characteristics14more vulnerable than 14% of US census tracts
Racial and ethnic minority status17more vulnerable than 17% of US census tracts
Housing type and transport36more vulnerable than 36% of US census tracts
Walkability6 out of 20Below average
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

57548 Lower Brule, SD21.4 km away
57339 Fort Thompson, SD22.3 km away
57345 Highmore, SD31.6 km away
57540 Holabird, SD32 km away
57341 Gann Valley, SD37.5 km away
57536 Harrold, SD37.9 km away
57371 Ree Heights, SD39 km away
57569 Reliance, SD42.8 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Hyde County100% of this ZIP code's land area
Time zoneCentral (UTC-06:00 standard)
Daylight saving timeObserved
Land area0.28 sq mi
Water area0.03 sq mi
Latitude, longitude44.2480, -99.4532

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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