ZIP code
51101
Sioux City, IA
51101 covers Sioux City in Woodbury County, with 1,077 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 51101. Methodology
ZIP code map of 51101
About ZIP code 51101
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 51101. Not ACS. Methodology
People in 51101
Race
- White673
- Black or African American171
- American Indian or Alaska Native114
- Asian41
- Native Hawaiian and Pacific Islander5
- Other race71
- Two or more races71
Hispanic or Latino (any race): 163
Age
- Under 1059
- 10 to 1973
- 20 to 29218
- 30 to 39241
- 40 to 49145
- 50 to 59151
- 60 to 69147
- 70 to 7977
- 80 and older35
Income and housing in 51101
Education
- High school graduate83.7%
- Bachelor's degree11.1%
- Graduate degree3.9%
Places covering 51101
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 City100.0%
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 County100.0%
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
Population history for 51101
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 441 | |
| 2006 | 470 | |
| 2007 | 813 | |
| 2008 | 392 | |
| 2009 | 442 | |
| 2010 | 449 | |
| 2011 | 828 | 439 |
| 2012 | 767 | 470 |
| 2013 | 716 | 450 |
| 2014 | 702 | 460 |
| 2015 | 790 | 490 |
| 2016 | 826 | 480 |
| 2017 | 868 | 530 |
| 2018 | 814 | 520 |
| 2019 | 816 | 580 |
| 2020 | 685 | 610 |
| 2021 | 649 | 640 |
| 2022 | 1,070 | 680 |
| 2023 | 1,077 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 51101
12 nearest ZIP centroids (any distance)
- 51105Sioux City1.7 miPop 10,726 · Income $46,940
- 51104Sioux City2.9 miPop 22,792 · Income $74,984
- 51103Sioux City3.3 miPop 17,145 · Income $57,212
- 68776South Sioux City3.8 miPop 15,034 · Income $68,686
- 51106Sioux City4.6 miPop 28,381 · Income $74,486
- 51111Sioux City5.2 miPop 48 · Income $45,250
- 51108Sioux City5.4 miPop 5,637 · Income $78,333
- 57049North Sioux City6.2 miPop 7,814 · Income $93,239
- 68731Dakota City7.8 miPop 3,691 · Income $85,815
- 51054Sergeant Bluff8.4 miPop 5,596 · Income $121,228
- 51109Sioux City8.9 miPop 3,731 · Income $70,750
- 51030Lawton10.5 miPop 1,630 · Income $78,750
ZIP centroids within 2 miles
| ZIP | City | State | Distance (miles) | ACS population | Median income |
|---|---|---|---|---|---|
| 51105 | Sioux City | IA | 1.7 mi | 10,726 | $46,940 |
ZIPs within 2 miles of this place
Default is 2 miles. Distances are between ZIP centroids. Widen the radius if nothing is in range.
ZIP code 51101 FAQ
- What city is ZIP code 51101 in?
- 51101 is in Sioux City, IA.
- What county is 51101 in?
- 51101 is in Woodbury County.
- What is the median household income in 51101?
- The median household income in 51101 is $18,103.
- Which ZIP codes are near 51101?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 51101.