Calhoun County, IA ZIP Codes
12 ZIP codes cover all or part of Calhoun County, Iowa. The Census Bureau counts 9,803 residents in the county, with a median household income of $64,964 and a median home value of $118,800. Median household income ranges from $61,108 in 50579 to $75,329 in 51449. Its largest communities include Rockwell City, Lake City, Manson, Twin Lakes and Pomeroy.
Calhoun County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 9,803 |
| Households | 3,993 |
| Median household income | $64,964 |
| Median home value | $118,800 |
| Median age | 42.8 |
| Median rent | $723 |
All 12 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 11,940 |
| Households (sum of ZIP codes) | 4,793 |
| Median household income, range across ZIP codes | $61,108 (50579) to $75,329 (51449) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $68,652 |
| Homeowners | 78.3% |
| Households with kids under 18 | 26.4% |
| Moved in the past year | 12.7% |
| Carrier routes in EDDM2GO's route library | 4 routes, 491 homes (3 of 12 ZIP codes) |
Top facts
- Highest median household income in Calhoun County: 51449 ($75,329)
- Most residents: 50579 (3,034 people)
- Highest homeownership: 51449 (80.6% own their home)
- Most households with kids: 50563 (25.6% of households)
- Most new movers: 50579 (21.4% moved in last year)
- Youngest median age: 50579 (42.2 years)
- Highest median home value: 50563 ($161,100)
Every ZIP code in Calhoun County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 50579 | Rockwell City | 3,034 | 1,085 | $61,108 | $126,000 | 78.2% | 25.4% | 21.4% | — | — | 100% of its land |
| 50563 | Manson | 2,505 | 1,101 | $71,094 | $161,100 | 79.2% | 25.6% | 15.0% | — | — | 69% of its land |
| 51449 | Lake City | 1,950 | 823 | $75,329 | $115,800 | 80.6% | 21.7% | 7.7% | — | — | 88% of its land |
| 50540 | Fonda | 998 | 351 | $73,438 | $109,800 | 72.9% | 23.6% | 14.4% | 1 | 295 | 25% of its land |
| 50575 | Pomeroy | 696 | 340 | $52,717 | $88,900 | 89.1% | 18.2% | 3.8% | — | — | 53% of its land |
| 50538 | Farnhamville | 661 | 275 | $62,344 | $94,000 | 88.7% | 35.3% | 3.9% | 2 | 114 | 93% of its land |
| 50561 | Lytton | 585 | 215 | $67,446 | $77,800 | 81.9% | 41.9% | 6.7% | — | — | 58% of its land |
| 51433 | Auburn | 567 | 227 | $68,125 | $153,200 | 48.5% | 36.6% | 4.4% | — | — | 42% of its land |
| 51453 | Lohrville | 500 | 197 | $86,563 | $78,800 | 69.0% | 29.4% | 12.7% | — | — | 91% of its land |
| 50586 | Somers | 272 | 123 | $55,375 | $89,100 | 82.9% | 25.2% | 2.6% | 1 | 90 | 93% of its land |
| 50551 | Jolley | 96 | 30 | — | $51,100 | 60.0% | 40.0% | 0.0% | — | — | 100% of its land |
| 50552 | Knierim | 76 | 26 | $89,000 | $112,500 | 88.5% | 46.2% | 9.2% | — | — | 100% of its land |
A ZIP code is listed for Calhoun 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
- Rockwell City — 2,401 residents · 1 ZIP code
- Lake City — 1,693 residents · 1 ZIP code
- Manson — 1,645 residents · 1 ZIP code
- Twin Lakes — 579 residents · 2 ZIP codes
- Pomeroy — 542 residents · 1 ZIP code
- Farnhamville — 386 residents · 1 ZIP code
- Lytton — 357 residents · 1 ZIP code
- Lohrville — 277 residents · 1 ZIP code
- Somers — 149 residents · 1 ZIP code
- Lanesboro — 78 residents · 3 ZIP codes
- Knierim — 76 residents · 3 ZIP codes
- Rinard — 62 residents · 1 ZIP code
- Jolley — 19 residents · 1 ZIP code
Price a mailing to Calhoun County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Calhoun County, IA?
- 50579, 50563, 51449, 50540, 50575, 50538, 50561, 51433, 51453, 50586, 50551 and 50552. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Calhoun County?
- 9,803 residents in 3,993 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Calhoun County?
- $64,964 for the county as a whole. Its ZIP codes range from $61,108 (50579) to $75,329 (51449).
- Which Calhoun County ZIP code has the highest median household income?
- 51449, at $75,329, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Calhoun County?
- For the 3 of 12 ZIP codes in EDDM2GO's stored route library: 4 carrier routes reaching 491 residential and 8 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.