Union County, IA ZIP Codes
9 ZIP codes cover all or part of Union County, Iowa. The Census Bureau counts 11,993 residents in the county, with a median household income of $57,772 and a median home value of $122,000. Median household income ranges from $58,015 in 50801 to $70,926 in 50851. Its largest communities include Creston, Afton, Shannon City, Cromwell and Arispe.
Union County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 11,993 |
| Households | 5,116 |
| Median household income | $57,772 |
| Median home value | $122,000 |
| Median age | 40.5 |
| Median rent | $721 |
All 9 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 14,899 |
| Households (sum of ZIP codes) | 6,195 |
| Median household income, range across ZIP codes | $58,015 (50801) to $70,926 (50851) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $60,411 |
| Homeowners | 73.5% |
| Households with kids under 18 | 27.7% |
| Moved in the past year | 10.5% |
| Carrier routes in EDDM2GO's route library | 6 routes, 1,015 homes (4 of 9 ZIP codes) |
Top facts
- Highest median household income in Union County: 50851 ($70,926)
- Most residents: 50801 (9,034 people)
- Highest homeownership: 50830 (80.7% own their home)
- Most households with kids: 50851 (35.2% of households)
- Most new movers: 50801 (13.8% moved in last year)
- Youngest median age: 50830 (36.2 years)
- Highest median home value: 50801 ($124,900)
Every ZIP code in Union County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 50801 | Creston | 9,034 | 3,964 | $58,015 | $124,900 | 68.8% | 26.3% | 13.8% | — | — | 69% of its land |
| 50851 | Lenox | 2,193 | 860 | $70,926 | $121,000 | 78.5% | 35.2% | 5.1% | — | — | 17% of its land |
| 50830 | Afton | 1,846 | 662 | $61,094 | $113,300 | 80.7% | 29.6% | 4.9% | 3 | 686 | 100% of its land |
| 50149 | Lorimor | 883 | 306 | $59,167 | $136,200 | 82.4% | 32.0% | 5.7% | — | — | 49% of its land |
| 50861 | Shannon City | 311 | 132 | $63,125 | — | 75.8% | 33.3% | 4.8% | — | — | 69% of its land |
| 50254 | Thayer | 296 | 94 | $64,211 | $175,000 | 100.0% | 18.1% | 14.5% | 1 | 132 | 100% of its land |
| 50074 | Ellston | 215 | 121 | $121,094 | $605,800 | 97.5% | 5.0% | 0.0% | 1 | 188 | 15% of its land |
| 50842 | Cromwell | 99 | 47 | $59,583 | $104,700 | 95.7% | 14.9% | 0.0% | 1 | 45 | 100% of its land |
| 50831 | Arispe | 22 | 9 | $95,625 | — | 88.9% | 11.1% | 50.0% | — | — | 100% of its land |
A ZIP code is listed for Union County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- Creston — 7,435 residents · 1 ZIP code
- Afton — 817 residents · 1 ZIP code
- Shannon City — 115 residents · 1 ZIP code
- Cromwell — 103 residents · 2 ZIP codes
- Arispe — 78 residents · 2 ZIP codes
- Thayer — 45 residents · 1 ZIP code
Price a mailing to Union County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Union County, IA?
- 50801, 50851, 50830, 50149, 50861, 50254, 50074, 50842 and 50831. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Union County?
- 11,993 residents in 5,116 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Union County?
- $57,772 for the county as a whole. Its ZIP codes range from $58,015 (50801) to $70,926 (50851).
- Which Union County ZIP code has the highest median household income?
- 50851, at $70,926, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Union County?
- For the 4 of 9 ZIP codes in EDDM2GO's stored route library: 6 carrier routes reaching 1,015 residential and 36 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.