Residential delivery area · Iowa
ZIP Code 51250: Sioux Center, IA
ZIP code 51250 uses the postal name Sioux Center, Iowa and lies entirely in Sioux County (Census 2020 ZIP-county file). About 10,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $94,119 (Census Bureau, ACS 2020-2024). By Census place, 9% of its land lies in Sioux Center; 92% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Sioux Center · its only residential ZIP
- County
- Sioux County
- Census places
- Sioux Center
- House district
- IA-4 119th Congress
- State
- Iowa
- Time zone
- Central
- Land area
- 73.3 sq mi · 136 people per sq mi
Where is ZIP code 51250?
51250 centers on 43.091°, -96.206° and covers 73.3 square miles of land plus 0.1 of water. It borders 6 ZIP codes: 51041, 51239, 51036, 51247, 51027, 51023.
The map draws ZIP code areas only. For the streets inside 51250, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 51250 compare with the rest of Sioux County?
| Measure | 51250 | In Sioux County | In IA |
|---|---|---|---|
| People (ACS 2020-2024) | 9,970 | 2nd of 19 | 79th of 970 |
| Median household income | $94k | 3rd of 12 | 78th of 396 |
| Median home value | $294k | 1st of 14 | 58th of 423 |
Its median household income is higher than in 77% of U.S. residential ZIP codes, and it is denser than 58% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 51250?
The 2020 Census counted 9,427 people in 51250; the ACS, which samples households over 2020-2024, estimates 9,970. Between the 2010 and 2020 censuses its population grew 14.3% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 9,970
- 2020 Census count
- 9,427+14.3% since 2010 (8,249)
- Households
- 3,373
- Median age
- 31.6
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 51250?
Of the 9,970 people the ACS estimates in 51250, 26.7% are under 18 and 14.4% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (85.2%), then Hispanic or Latino (10.9%).
- Under 1826.7%
- 18 to 6458.9%
- 65 and older14.4%
- White, not Hispanic85.2%
- Hispanic or Latino10.9%
- Other or two or more2.0%
- Asian, not Hispanic1.1%
- Black, not Hispanic0.7%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 51250 earn?
Median household income is $94,119 (ACS 2020-2024), the 3rd highest of the 12 ranked ZIP codes in Sioux County. It is not measurably different from 2015-2019 ($94,270 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $94,119±$14,087
- Income per person
- $37,713
- Below the poverty line
- 2.9%
- Unemployed (of the labor force)
- 1.1%
- Adults 25+ with a bachelor's degree
- 41.3%
- Adjusted gross income per tax return, 2022
- $102,3553,630 returns; wages 57% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 51250?
FHFA's house price index for 51250, built from repeat sales and appraisals of the same homes, rose 72% from 2015 to 2025 and rose 39% from 2020 to 2025, and moved +5.0% in 2025.
- Median home value (owners' estimate)
- $294,000
- Median gross rent
- –
- Homes owned by their occupants
- 78.4%
- Housing units
- 3,447
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 51250?
411 business establishments had a location in this ZIP code in 2023, 4 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction52
- Retail trade47
- Health care and social assistance38
- Professional, scientific, and technical services36
- Other services (except public administration)35
- Transportation and warehousing31
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 51250?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 51041 | Orange City | 7,324 | $84k | 8.0 mi |
| 51239 | Hull | 2,876 | $78k | 8.3 mi |
| 51036 | Maurice | 445 | $123k | 8.4 mi |
| 51247 | Rock Valley | 5,094 | $78k | 9.7 mi |
| 51027 | Ireton | 1,280 | $101k | 10.6 mi |
| 51023 | Hawarden | 3,473 | $80k | 14.3 mi |
| 51234 | Boyden | 1,172 | $84k | 11.7 mi (near) |
| 51003 | Alton | 1,938 | $101k | 13.1 mi (near) |
| 51235 | Doon | 1,007 | $71k | 14.1 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.