ZIP code
51109
Sioux City, IA
51109 covers Sioux City in Woodbury County, with 3,731 people in the ACS 2023 estimate.
Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 51109. Methodology
ZIP code map of 51109
About ZIP code 51109
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 51109. Not ACS. Methodology
People in 51109
Race
- White2,587
- Black or African American55
- American Indian or Alaska Native51
- Asian36
- Native Hawaiian and Pacific Islander2
- Other race181
- Two or more races197
Hispanic or Latino (any race): 373
Age
- Under 10352
- 10 to 19431
- 20 to 29317
- 30 to 39373
- 40 to 49400
- 50 to 59425
- 60 to 69428
- 70 to 79271
- 80 and older112
Income and housing in 51109
Education
- High school graduate84.9%
- Bachelor's degree3.0%
- Graduate degree1.3%
Places covering 51109
Cities and places — Population overlap
Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
- Sioux City89.9%
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
Counties — Population overlap
Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.
- Woodbury County89.9%
- Plymouth County10.1%
ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
10.1% of this ZIP is outside city limits (a real overlap row, not missing data).
Population history for 51109
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 2,762 | |
| 2006 | 2,758 | |
| 2007 | 3,070 | |
| 2008 | 2,787 | |
| 2009 | 2,883 | |
| 2010 | 2,896 | |
| 2011 | 3,111 | 2,765 |
| 2012 | 3,066 | 2,740 |
| 2013 | 3,122 | 2,750 |
| 2014 | 2,925 | 2,820 |
| 2015 | 3,073 | 2,800 |
| 2016 | 3,107 | 2,720 |
| 2017 | 3,027 | 2,730 |
| 2018 | 2,989 | 2,700 |
| 2019 | 3,166 | 2,690 |
| 2020 | 3,218 | 2,740 |
| 2021 | 3,453 | 2,590 |
| 2022 | 3,619 | 2,600 |
| 2023 | 3,731 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 51109
12 nearest ZIP centroids (any distance)
- 57038Jefferson5.9 miPop 1,713 · Income $86,895
- 51104Sioux City6.2 miPop 22,792 · Income $74,984
- 57049North Sioux City6.3 miPop 7,814 · Income $93,239
- 51103Sioux City6.3 miPop 17,145 · Income $57,212
- 51108Sioux City6.7 miPop 5,637 · Income $78,333
- 51062Westfield6.9 miPop 338 · Income —
- 51105Sioux City8.8 miPop 10,726 · Income $46,940
- 51101Sioux City8.9 miPop 1,077 · Income $18,103
- 51038Merrill10.1 miPop 1,512 · Income $88,864
- 51024Hinton10.6 miPop 2,048 · Income $108,892
- 68776South Sioux City10.6 miPop 15,034 · Income $68,686
- 68743Jackson12.4 miPop 796 · Income $71,467
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 51109, measured by Census internal-point centroids. Try a wider radius.
ZIPs within 2 miles of this place
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ZIP code 51109 FAQ
- What city is ZIP code 51109 in?
- 51109 is in Sioux City, IA.
- What county is 51109 in?
- 51109 is in Woodbury County.
- What is the median household income in 51109?
- The median household income in 51109 is $70,750.
- Which ZIP codes are near 51109?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 51109.