ZIP Code 51640, Iowa
ZIP Code 51640 profile, demographic data, and geographic information.
ZCTA5 51640 is a 5-digit ZIP Code area located in Atchison County / Fremont County, Iowa. As of official census estimates, it has a reported population of 1,381. The land area covers 115.41 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population | 1,381 | ±238 | 2020-2024 / Census ACS 5-Year 2024 |
| Median Age | 43.1 yrs | ±5.5 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 588 | ±87 | 2020-2024 / Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).
Housing & Real Estate Profile
| Housing Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Total Housing Units | 690 | ±85 |
| Occupied Housing Units | 588 | ±87 |
| Vacant Housing Units | 102 | ±40 |
| Median Home Value | $122,900 | ±$26,477 |
| Median Gross Rent | $729 | ±$18 |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $65,385 | ±$11,227 |
| Per Capita Income | $36,780 | ±$3,931 |
| Poverty Rate | 6.7% | ±3.1% |
| Population Below Poverty Level | 92 | ±45 |
| Unemployment Rate | 1% | ±1.2% |
| Civilian Labor Force, Employed | 670 | ±122 |
| Broadband Internet Rate | 88.3% | ±5.4% |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
GUS Population: 14,184 (2024)
ID: 164234
|
County | Official County Government |
Contact: BOARD OF SUPERVISORS
110 ALLAMAKEE ST, WAUKON IA 52172-1744
|
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | 03-05 | NEBRASKA CITY, NE | |
| Regular School Nearby | 09-12 | Hamburg, IA | |
| Regular School Nearby | 06-08 | Hamburg, IA | |
| Regular School Nearby | PK-05 | Hamburg, IA | |
| Special Education School Nearby | PK-12 | NEBRASKA CITY, NE | |
| Regular School Nearby | 09-12 | NEBRASKA CITY, NE | |
| Regular School Nearby | 06-08 | NEBRASKA CITY, NE | |
| Regular School Nearby | PK-02 | NEBRASKA CITY, NE | |
| Regular School Nearby | PK-05 | ROCK PORT, MO | |
| Regular School Nearby | 06-12 | ROCK PORT, MO |
Source: k12guides.com.
Community Facilities & Infrastructure
Displaying 10 civic institutions across 2 datasets queried
CMS • IPEDS • IMLS
| Facility Name | Category | Relationship | Address / Location | Contact |
|---|---|---|---|---|
|
Peru State College
|
College | 11.1 mi away | 600 Hoyt Street, Peru, NE, 68421-0010 |
4028723815
|
|
HAMBURG PUBLIC LIBRARY
|
Library | 1.4 mi away | 1301 MAIN ST, HAMBURG, IA, 51640 |
(712) 382-1395
|
|
SIDNEY PUBLIC LIBRARY
|
Library | 8.6 mi away | 1002 ILLINOIS ST, SIDNEY, IA, 51652 |
(712) 374-6203
|
|
MORTON-JAMES PUBLIC LIBRARY
|
Library | 10.8 mi away | 923 FIRST CORSO, NEBRASKA CITY, NE, 68410 |
(402) 873-5609
|
|
FARRAGUT PUBLIC LIBRARY
|
Library | 11.5 mi away | 615 HARTFORD AVE, FARRAGUT, IA, 51639 | — |
|
ATCHISON COUNTY LIBRARY
|
Library | 16.6 mi away | 200 S MAIN ST, ROCK PORT, MO, 64482 |
(660) 744-5404
|
|
RANDOLPH PUBLIC LIBRARY
|
Library | 17.8 mi away | 106 S MAIN, RANDOLPH, IA, 51649 |
(712) 625-3561
|
|
SHENANDOAH PUBLIC LIBRARY
|
Library | 17.9 mi away | 201 S ELM ST, SHENANDOAH, IA, 51601 |
(712) 246-2315
|
|
LAKIN LIBRARY & ENVISIONING CENTER
|
Library | 18.9 mi away | 725 MAIN ST, TABOR, IA, 51653 |
(712) 629-2735
|
|
AUBURN MEMORIAL LIBRARY
|
Library | 19.1 mi away | 1810 COURTHOUSE AVENUE, AUBURN, NE, 68305 |
(402) 274-4023
|
Distances calculated from authoritative source coordinates. Source: CMS, IMLS, NCES IPEDS.
Climate & Weather Observations
NOAA Monthly Climate Normals
Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at SIDNEY 1SSE, IA US, located 7.7 miles from ZCTA5 51640. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 32.5° | 13.1° | 22.8° | 0.77" | 5.0" |
| February | 37.8° | 17.3° | 27.6° | 1.03" | 6.3" |
| March | 50.8° | 27.7° | 39.3° | 1.85" | 2.3" |
| April | 62.5° | 38.5° | 50.5° | 3.15" | 1.2" |
| May | 72.5° | 50.5° | 61.5° | 5.26" | 0.0" |
| June | 82.2° | 60.9° | 71.6° | 4.81" | 0.0" |
| July | 85.8° | 64.9° | 75.4° | 4.49" | 0.0" |
| August | 83.9° | 62.5° | 73.2° | 3.28" | 0.0" |
| September | 77.8° | 53.6° | 65.7° | 3.10" | 0.0" |
| October | 65.4° | 41.7° | 53.6° | 2.72" | 0.5" |
| November | 49.7° | 28.7° | 39.2° | 1.59" | 1.1" |
| December | 37.1° | 18.7° | 27.9° | 1.21" | 4.2" |
Source: NOAA U.S. Climate Normals (1991–2020).
Local Weather Forecast
Weather forecast data is currently unavailable in the local cache.
Nearby Cities & Communities
Listing adjacent communities by spatial proximity (miles)
Proximity discovery
| Community Name | Classification | Distance | Population |
|---|---|---|---|
| Hamburg city | City | 1.4 mi | — |
| Riverton city | City | 6.4 mi | — |
| Sidney city | City | 8.3 mi | — |
| Watson village | Village | 10.3 mi | — |
| Peru city | City | 10.8 mi | — |
| Nebraska City city | City | 11.0 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 51640. • Official Source Dataset →
- Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
- Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
- Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.