ZIP code
51231
Archer, IA
51231 covers Archer in O'Brien County, with 543 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 51231. Methodology
ZIP code map of 51231
About ZIP code 51231
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 51231. Not ACS. Methodology
People in 51231
Race
- White223
- American Indian or Alaska Native1
- Asian1
- Other race2
- Two or more races5
Hispanic or Latino (any race): 7
Age
- Under 1029
- 10 to 1936
- 20 to 2923
- 30 to 3932
- 40 to 4925
- 50 to 5918
- 60 to 6946
- 70 to 7914
- 80 and older9
Income and housing in 51231
Education
- High school graduate98.0%
- Bachelor's degree34.9%
- Graduate degree2.0%
Places covering 51231
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.
- Archer50.4%
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.
- O'Brien 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
49.6% of this ZIP is outside city limits (a real overlap row, not missing data).
Population history for 51231
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 304 | |
| 2006 | 274 | |
| 2007 | 300 | |
| 2009 | 269 | |
| 2010 | 268 | |
| 2011 | 160 | 250 |
| 2012 | 256 | 280 |
| 2013 | 284 | 290 |
| 2014 | 362 | 290 |
| 2015 | 433 | 270 |
| 2016 | 398 | 260 |
| 2017 | 382 | 250 |
| 2018 | 369 | 240 |
| 2019 | 386 | 260 |
| 2020 | 583 | 280 |
| 2021 | 659 | 260 |
| 2022 | 621 | 260 |
| 2023 | 543 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 51231
12 nearest ZIP centroids (any distance)
- 51245Primghar7.3 miPop 1,264 · Income $78,958
- 51238Hospers7.9 miPop 1,483 · Income $82,634
- 51248Sanborn8.0 miPop 1,643 · Income $60,809
- 51201Sheldon8.2 miPop 6,226 · Income $70,592
- 51022Granville10.3 miPop 966 · Income $91,133
- 51046Paullina10.4 miPop 1,407 · Income $81,389
- 51232Ashton13.5 miPop 713 · Income $79,250
- 51244Matlock13.7 miPop 140 · Income $81,771
- 51009Calumet14.7 miPop 131 · Income $53,125
- 51003Alton14.7 miPop 1,815 · Income $85,909
- 51234Boyden15.2 miPop 1,090 · Income $81,458
- 51058Sutherland15.6 miPop 1,020 · Income $61,833
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 51231, measured by Census internal-point centroids. Try a wider radius.
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 51231 FAQ
- What city is ZIP code 51231 in?
- 51231 is in Archer, IA.
- What county is 51231 in?
- 51231 is in O'Brien County.
- What is the median household income in 51231?
- The median household income in 51231 is $105,388.
- Which ZIP codes are near 51231?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 51231.