Residential delivery area · South Dakota
ZIP Code 57049: North Sioux City, SD
ZIP code 57049 uses the postal name North Sioux City, South Dakota and lies entirely in Union County (Census 2020 ZIP-county file). About 8,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $93,134 (Census Bureau, ACS 2020-2024). By Census place, its land lies in North Sioux City (19%) and Dakota Dunes (17%); 64% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- North Sioux City · its only residential ZIP
- County
- Union County
- Census places
- North Sioux City (19%); Dakota Dunes (17%) census-designated place
- Metro area
- Sioux City, IA-NE-SD
- House district
- SD at large 119th Congress
- State
- South Dakota
- Time zone
- Central
- Land area
- 14.2 sq mi · 562 people per sq mi
Where is ZIP code 57049?
57049 centers on 42.523°, -96.510° and covers 14.2 square miles of land plus 1.5 of water. It borders 4 ZIP codes: 57038, 68776, 51109, 68743.
The map draws ZIP code areas only. For the streets inside 57049, 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 57049 compare with the rest of Union County?
| Measure | 57049 | In Union County | In SD |
|---|---|---|---|
| People (ACS 2020-2024) | 7,962 | 1st of 9 | 26th of 375 |
| Median household income | $93k | 2nd of 6 | 22nd of 107 |
| Median home value | $432k | 1st of 7 | 2nd of 109 |
Its median household income is higher than in 76% of U.S. residential ZIP codes, and it is denser than 73% 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 57049?
The 2020 Census counted 7,725 people in 57049; the ACS, which samples households over 2020-2024, estimates 7,962. Between the 2010 and 2020 censuses its population grew 33.4% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 7,962
- 2020 Census count
- 7,725+33.4% since 2010 (5,789)
- Households
- 3,504
- Median age
- 39.8
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 57049?
Of the 7,962 people the ACS estimates in 57049, 21.9% are under 18 and 20.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (84.1%).
- Under 1821.9%
- 18 to 6457.9%
- 65 and older20.2%
- White, not Hispanic84.1%
- Hispanic or Latino7.8%
- Other or two or more4.8%
- Black, not Hispanic1.7%
- Asian, not Hispanic1.6%
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 57049 earn?
Median household income is $93,134 (ACS 2020-2024), the 2nd highest of the 6 ranked ZIP codes in Union County. It is not measurably different from 2015-2019 ($94,342 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $93,134±$10,255
- Income per person
- $63,875
- Below the poverty line
- 6.2%
- Unemployed (of the labor force)
- 3.7%
- Adults 25+ with a bachelor's degree
- 44.1%
- Adjusted gross income per tax return, 2022
- $252,6813,950 returns; wages 36% 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 57049?
FHFA's house price index for 57049, built from repeat sales and appraisals of the same homes, rose 61% from 2015 to 2025 and rose 32% from 2020 to 2025, and moved −3.2% in 2025.
- Median home value (owners' estimate)
- $432,100
- Median gross rent
- $1,147
- Homes owned by their occupants
- 62.7%
- Housing units
- 3,557
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 57049?
343 business establishments had a location in this ZIP code in 2023, 46 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance57
- Professional, scientific, and technical services35
- Construction33
- Wholesale trade33
- Finance and insurance31
- Retail trade26
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 57049?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 57038 | Jefferson | 1,796 | $106k | 5.1 mi |
| 68776 | South Sioux City, NE | 15,373 | $69k | 5.5 mi |
| 51109 | Sioux City, IA | 3,606 | $79k | 6.3 mi |
| 68743 | Jackson, NE | 814 | $72k | 6.8 mi |
| 51103 | Sioux City, IA | 16,895 | $58k | 3.1 mi (near) |
| 51104 | Sioux City, IA | 23,197 | $75k | 5.5 mi (near) |
| 51101 | Sioux City, IA | 1,031 | $15k | 6.2 mi (near) |
| 51105 | Sioux City, IA | 10,415 | $52k | 7.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.