| ZIP Codes: | 25 ZIP Codes (17 Standard, 4 PO Box, 4 Unique) [See All] |
| Area Codes: | 507 / 924 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:55:03 PM |
| Population: | 9,062 [See All] |
| FIPS: | 27133 |
| CBSA: | Sioux Falls, SD-MN |
| Land Area: | 890 sq mi |
| Water Area: | 0 sq mi |
| Coordinates: | 43.6451, -96.2269 |
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209,935 residents live across 25 ZIPs covering 890 sq mi, served by 12 distinct USPS-recognized cities.
Population moved from 182,317 to 209,935 from 2014 to 2024 — a +15.1% change. 14 ZIPs gained residents, 5 lost.
The county's wealthiest ZIP 57055 (Renner, $120,341 median) and poorest ZIP 57104 (Sioux Falls, $57,688) are 4.3 miles apart — a 2.1× income gap across local geography.
Median home values vary 2.3× across this county — from $202,800 in 57104 (Sioux Falls) to $474,500 in 57055 (Renner).
Density varies 211× across the county — from 18 people/sq mi in 57018 (Colton) to 3,755 in 57103 (Sioux Falls).
Most of the decade's growth concentrated around Sioux Falls — top growth ZIPs averaged +58.0% over the past ten years ( 57110 , 57055 and 57107 ).
Educational attainment ranges from 19.0% bachelor's+ in 57018 (Colton) to 44.4% in 57105 (Sioux Falls) — the breadth of educational profiles across the area.
Within South Dakota, this is the #70 most populous of 93 counties and ranks #72 for median household income .
Hosts 4 single-entity Unique ZIPs: 57197Augustana College ; 57193Midland Life Ins Co ; 57186Sioux Falls ; and 57198Earth Resources Obs .
Weighted by population, the typical household earns about $80,118 across the county — reflecting what a typical resident sees, not a simple ZIP average.
35.3% of adults age 25+ hold a bachelor's degree or higher (49,072 of 139,099 reporting). The most-educated ZIPs cluster around Sioux Falls.
17 Standard delivery, 4 PO Box only, 4 single-entity Unique ZIPs serve this county.
4 ZIP codes in this county serve a single facility — typically theme parks, universities, large corporations, airports, or government complexes.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 57106 | Sioux Falls | Standard | 51,907 | $77,580 | 28.8 | 24.3% |
| 57103 | Sioux Falls | Standard | 35,582 | $72,831 | 9.5 | -0.8% |
| 57104 | Sioux Falls | Standard | 26,963 | $57,688 | 30.6 | 5.8% |
| 57110 | Sioux Falls | Standard | 23,313 | $88,955 | 20.9 | 72.3% |
| 57105 | Sioux Falls | Standard | 23,287 | $77,292 | 7.6 | 1.2% |
| 57107 | Sioux Falls | Standard | 12,605 | $74,141 | 46.5 | 45.8% |
| 57005 | Brandon | Standard | 12,290 | $112,500 | 53.1 | 11.1% |
| 57033 | Hartford | Standard | 5,576 | $105,560 | 119.7 | 4.2% |
| 57022 | Dell Rapids | Standard | 5,339 | $100,656 | 147.8 | 12.9% |
| 57030 | Garretson | Standard | 2,510 | $79,375 | 124.5 | -23.8% |
| 57003 | Baltic | Standard | 2,274 | $111,932 | 51.4 | 19.0% |
| 57020 | Crooks | Standard | 1,622 | $101,500 | 18.1 | -12.6% |
| 57068 | Valley Springs | Standard | 1,603 | $112,847 | 40.2 | 18.3% |
| 57035 | Humboldt | Standard | 1,591 | $99,565 | 88.4 | 34.0% |
| 57018 | Colton | Standard | 1,495 | $97,500 | 83.9 | 7.6% |
| 57055 | Renner | Standard | 1,404 | $120,341 | 15.6 | 56.0% |
| 57197 | Sioux Falls | Unique | 388 | — | 0.1 | -54.8% |
| 57041 | Lyons | Standard | 133 | $158,393 | 3.6 | 70.5% |
| 57117 | Sioux Falls | PO Box | 53 | — | 0.0 | -7.0% |
| 57193 | Sioux Falls | Unique | — | — | 0.0 | — |
| 57186 | Sioux Falls | Unique | — | — | 0.0 | — |
| 57109 | Sioux Falls | PO Box | — | — | 0.0 | — |
| 57101 | Sioux Falls | PO Box | — | — | 0.0 | — |
| 57118 | Sioux Falls | PO Box | — | — | 0.0 | — |
| 57198 | Sioux Falls | Unique | — | — | 0.0 | — |