ZIP code
51527
Defiance, IA
51527 covers Defiance in Shelby County, with 346 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 51527. Methodology
ZIP code map of 51527

About ZIP code 51527
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 51527. Not ACS. Methodology
People in 51527
Race
- White440
- Black or African American1
- American Indian or Alaska Native5
- Asian1
- Other race11
- Two or more races17
Hispanic or Latino (any race): 27
Age
- Under 1057
- 10 to 1959
- 20 to 2940
- 30 to 3926
- 40 to 4944
- 50 to 5968
- 60 to 69106
- 70 to 7943
- 80 and older32
Income and housing in 51527
Education
- High school graduate94.6%
- Bachelor's degree16.3%
- Graduate degree10.1%
Places covering 51527
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.
- Defiance51.6%
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.
- Shelby County92.0%
- Crawford County8.0%
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
48.4% of this ZIP is outside city limits (a real overlap row, not missing data).
Population history for 51527
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 698 | |
| 2006 | 647 | |
| 2007 | 655 | |
| 2008 | 598 | |
| 2009 | 610 | |
| 2010 | 577 | |
| 2011 | 512 | 564 |
| 2012 | 498 | 590 |
| 2013 | 438 | 560 |
| 2014 | 493 | 550 |
| 2015 | 429 | 550 |
| 2016 | 454 | 530 |
| 2017 | 506 | 550 |
| 2018 | 496 | 520 |
| 2019 | 480 | 500 |
| 2020 | 607 | 500 |
| 2021 | 618 | 490 |
| 2022 | 395 | 480 |
| 2023 | 346 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 51527
12 nearest ZIP centroids (any distance)
- 51530Earling5.9 miPop 710 · Income $53,750
- 51454Manilla8.2 miPop 1,399 · Income $99,044
- 51446Irwin8.5 miPop 437 · Income $61,750
- 51578Westphalia8.6 miPop 150 · Income $108,646
- 51528Dow City9.8 miPop 604 · Income $69,000
- 51447Kirkman11.0 miPop 132 · Income $114,643
- 51520Arion11.1 miPop 235 · Income $58,547
- 51562Panama11.2 miPop 590 · Income $61,250
- 51432Aspinwall11.4 miPop 35 · Income $63,125
- 51537Harlan13.1 miPop 6,480 · Income $62,353
- 51442Denison13.5 miPop 9,586 · Income $64,399
- 51455Manning15.2 miPop 2,303 · Income $75,455
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 51527, measured by Census internal-point centroids. Try a wider radius.
ZIPs within 2 miles of this place
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ZIP code 51527 FAQ
- What city is ZIP code 51527 in?
- 51527 is in Defiance, IA.
- What county is 51527 in?
- 51527 is in Shelby County.
- What is the median household income in 51527?
- The median household income in 51527 is $63,155.
- Which ZIP codes are near 51527?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 51527.