57650 ZIP Code
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ZIP code 57650 covers Ralph, South Dakota.
- Time zone
- Mountain UTC-07:00observes daylight saving time
Where 57650 is
Ralph, South Dakota — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service 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 risk | Higher than 60.3% of US census tracts |
|---|---|
| FEMA rating | Relatively Moderate |
| Expected annual loss | 76.2 out of 100 |
| Community resilience | 35.7 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.
| Wildfire | 98.2Relatively High at its worst in this ZIP code |
|---|---|
| Winter weather | 98.2Very High at its worst in this ZIP code |
| Hail | 89.8Relatively High at its worst in this ZIP code |
| Ice storm | 89.3Relatively Moderate at its worst in this ZIP code |
| Cold wave | 87.6Relatively High at its worst in this ZIP code |
| Drought | 83.5Relatively Low at its worst in this ZIP code |
| Landslide | 81.7Relatively Low at its worst in this ZIP code |
| Strong wind | 77.7Relatively Moderate at its worst in this ZIP code |
| River flooding | 48.6Relatively Moderate at its worst in this ZIP code |
| Tornado | 44.7Relatively Low at its worst in this ZIP code |
| Lightning | 36.3Relatively Low at its worst in this ZIP code |
| Earthquake | 20Very Low at its worst in this ZIP code |
| Heat wave | 3.9Very 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 station | RALPH 1 N, SD US8.3 km away |
|---|---|
| Rain in a year | 16 in |
Average high and low by month
| January | 30.4°F / 7.2°F0.49 in rain |
|---|---|
| February | 33.4°F / 10.2°F0.71 in rain |
| March | 45.4°F / 19.6°F0.66 in rain |
| April | 56.8°F / 28.8°F1.33 in rain |
| May | 67.5°F / 39.7°F2.74 in rain |
| June | 77.2°F / 49.9°F3.24 in rain |
| July | 85.6°F / 55.8°F2.22 in rain |
| August | 85.5°F / 53.6°F1.39 in rain |
| September | 75.7°F / 43.6°F1.18 in rain |
| October | 58.6°F / 31.1°F1.19 in rain |
| November | 43.3°F / 19.6°F0.52 in rain |
| December | 32.5°F / 9.9°F0.52 in rain |
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 supermarket | None of this ZIP code |
|---|---|
| Far from a supermarket | None of this ZIP code |
| No vehicle and far from a supermarket | None 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%.
| Harding County School District 31-1 | 100% 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 vulnerability | 22more vulnerable than 22% of US census tracts |
|---|---|
| Socioeconomic status | 12more vulnerable than 12% of US census tracts |
| Household characteristics | 7more vulnerable than 7% of US census tracts |
| Racial and ethnic minority status | 25more vulnerable than 25% of US census tracts |
| Housing type and transport | 78more vulnerable than 78% of US census tracts |
| Walkability | 6.5 out of 20Below average |
Nearby ZIP codes
The closest ZIP codes by centre point, which is not the same as sharing a border.
| 57640 Lodgepole, SD | 21.7 km away |
|---|---|
| 57755 Ludlow, SD | 24.4 km away |
| 58653 Scranton, ND | 27.4 km away |
| 58649 Reeder, ND | 29.4 km away |
| 58639 Hettinger, ND | 29.7 km away |
| 57649 Prairie City, SD | 35.2 km away |
| 57651 Reva, SD | 36.5 km away |
| 58623 Bowman, ND | 45.3 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.
| Harding County | 100% of this ZIP code's land area |
|---|---|
| Time zone | Mountain (UTC-07:00 standard) |
| Daylight saving time | Observed |
| Land area | 75.62 sq mi |
| Water area | 0.13 sq mi |
| Latitude, longitude | 45.8554, -103.0356 |
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.