Osceola County, IA ZIP Codes
8 ZIP codes cover all or part of Osceola County, Iowa: 51249, 51346, 51248, 51354, 51243, 51232, 51350 and 51345. The Census Bureau counts 6,100 residents in the county, with a median household income of $69,239 and a median home value of $122,600. Median household income ranges from $61,500 in 51249 to $72,426 in 51346. Its largest communities include Sibley, Ocheyedan, Ashton, Melvin and Harris.
Osceola County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 6,100 |
| Households | 2,634 |
| Median household income | $69,239 |
| Median home value | $122,600 |
| Median age | 43.1 |
| Median rent | $797 |
All 8 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 10,433 |
| Households (sum of ZIP codes) | 4,532 |
| Median household income, range across ZIP codes | $61,500 (51249) to $72,426 (51346) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $65,521 |
| Homeowners | 78.9% |
| Households with kids under 18 | 23.2% |
| Moved in the past year | 8.9% |
| Carrier routes in EDDM2GO's route library | 10 routes, 2,233 homes (5 of 8 ZIP codes) |
Top facts
- Highest median household income in Osceola County: 51346 ($72,426)
- Most residents: 51249 (3,564 people)
- Highest homeownership: 51346 (82.7% own their home)
- Most households with kids: 51249 (26.6% of households)
- Most new movers: 51248 (14.7% moved in last year)
- Youngest median age: 51249 (41.4 years)
- Highest median home value: 51248 ($172,800)
Every ZIP code in Osceola County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 51249 | Sibley | 3,564 | 1,458 | $61,500 | $160,700 | 77.9% | 26.6% | 7.0% | — | — | 100% of its land |
| 51346 | Hartley | 2,247 | 963 | $72,426 | $156,800 | 82.7% | 21.2% | 12.3% | 4 | 1,083 | 20% of its land |
| 51248 | Sanborn | 1,534 | 686 | $64,375 | $172,800 | 76.2% | 22.4% | 14.7% | 2 | 629 | 10% of its land |
| 51354 | Ocheyedan | 965 | 462 | $72,639 | $115,400 | 81.2% | 20.6% | 6.8% | 2 | 295 | 100% of its land |
| 51243 | Little Rock | 735 | 294 | $83,750 | $92,200 | 89.1% | 31.3% | 2.3% | — | — | 14% of its land |
| 51232 | Ashton | 658 | 322 | $82,917 | $107,500 | 85.4% | 16.1% | 8.1% | 1 | 237 | 73% of its land |
| 51350 | Melvin | 383 | 157 | $77,250 | $79,300 | 84.7% | 27.4% | 6.3% | 1 | 106 | 93% of its land |
| 51345 | Harris | 347 | 190 | $54,301 | $141,700 | 40.0% | 12.1% | 4.9% | — | — | 97% of its land |
A ZIP code is listed for Osceola 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
- Sibley — 2,803 residents · 1 ZIP code
- Ocheyedan — 511 residents · 1 ZIP code
- Ashton — 461 residents · 1 ZIP code
- Melvin — 230 residents · 1 ZIP code
- Harris — 222 residents · 1 ZIP code
Price a mailing to Osceola County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Osceola County, IA?
- 51249, 51346, 51248, 51354, 51243, 51232, 51350 and 51345. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Osceola County?
- 6,100 residents in 2,634 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Osceola County?
- $69,239 for the county as a whole. Its ZIP codes range from $61,500 (51249) to $72,426 (51346).
- Which Osceola County ZIP code has the highest median household income?
- 51346, at $72,426, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Osceola County?
- For the 5 of 8 ZIP codes in EDDM2GO's stored route library: 10 carrier routes reaching 2,233 residential and 117 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.