Lyon County, IA ZIP Codes
9 ZIP codes cover all or part of Lyon County, Iowa. The Census Bureau counts 12,162 residents in the county, with a median household income of $76,746 and a median home value of $230,000. Median household income ranges from $61,667 in 51237 to $87,446 in 51241. Its largest communities include Rock Rapids, Larchwood, George, Inwood and Doon.
Lyon County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 12,162 |
| Households | 4,479 |
| Median household income | $76,746 |
| Median home value | $230,000 |
| Median age | 38.2 |
| Median rent | $843 |
All 9 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 12,920 |
| Households (sum of ZIP codes) | 4,816 |
| Median household income, range across ZIP codes | $61,667 (51237) to $87,446 (51241) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $75,416 |
| Homeowners | 81.7% |
| Households with kids under 18 | 33.4% |
| Moved in the past year | 8.5% |
| Carrier routes in EDDM2GO's route library | 9 routes, 2,283 homes (4 of 9 ZIP codes) |
Top facts
- Highest median household income in Lyon County: 51241 ($87,446)
- Most residents: 51246 (4,041 people)
- Highest homeownership: 51240 (86.9% own their home)
- Most households with kids: 51240 (42.2% of households)
- Most new movers: 51235 (17.1% moved in last year)
- Youngest median age: 51240 (34.4 years)
- Highest median home value: 51241 ($280,600)
Every ZIP code in Lyon County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 51246 | Rock Rapids | 4,041 | 1,330 | $72,400 | $247,900 | 78.8% | 37.2% | 6.8% | 4 | 1,656 | 100% of its land |
| 51241 | Larchwood | 2,103 | 825 | $87,446 | $280,600 | 78.7% | 37.1% | 9.9% | — | — | 100% of its land |
| 51240 | Inwood | 1,914 | 632 | $83,929 | $232,600 | 86.9% | 42.2% | 7.9% | 2 | 442 | 85% of its land |
| 51237 | George | 1,605 | 690 | $61,667 | $159,500 | 80.4% | 22.8% | 11.8% | — | — | 100% of its land |
| 51235 | Doon | 1,007 | 411 | $71,016 | $240,700 | 74.2% | 26.8% | 17.1% | — | — | 97% of its land |
| 51243 | Little Rock | 735 | 294 | $83,750 | $92,200 | 89.1% | 31.3% | 2.3% | — | — | 86% of its land |
| 51232 | Ashton | 658 | 322 | $82,917 | $107,500 | 85.4% | 16.1% | 8.1% | 1 | 237 | 26% of its land |
| 51230 | Alvord | 478 | 185 | $75,625 | $190,800 | 98.9% | 40.5% | 1.5% | 2 | 96 | 100% of its land |
| 51242 | Lester | 379 | 127 | $95,625 | $190,900 | 86.6% | 41.7% | 6.1% | — | — | 100% of its land |
A ZIP code is listed for Lyon 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
- Rock Rapids — 2,661 residents · 1 ZIP code
- Larchwood — 1,136 residents · 1 ZIP code
- George — 1,064 residents · 1 ZIP code
- Inwood — 793 residents · 1 ZIP code
- Doon — 529 residents · 1 ZIP code
- Little Rock — 395 residents · 1 ZIP code
- Lester — 340 residents · 1 ZIP code
- Alvord — 173 residents · 1 ZIP code
Rankings
- Richest ZIP codes in Lyon County — 5 ZIP codes ranked
- ZIP codes with the highest home values in Lyon County — 5 ZIP codes ranked
- ZIP codes with the highest homeownership in Lyon County — 5 ZIP codes ranked
- ZIP codes with the most families with kids in Lyon County — 5 ZIP codes ranked
- ZIP codes with the most new movers in Lyon County — 5 ZIP codes ranked
- Youngest ZIP codes in Lyon County — 5 ZIP codes ranked
- Oldest ZIP codes in Lyon County — 5 ZIP codes ranked
- Fastest-growing ZIP codes in Lyon County — 5 ZIP codes ranked
Price a mailing to Lyon County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Lyon County, IA?
- 51246, 51241, 51240, 51237, 51235, 51243, 51232, 51230 and 51242. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Lyon County?
- 12,162 residents in 4,479 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Lyon County?
- $76,746 for the county as a whole. Its ZIP codes range from $61,667 (51237) to $87,446 (51241).
- Which Lyon County ZIP code has the highest median household income?
- 51241, at $87,446, among ZIP codes with at least 1,000 residents. See the full ranking of Lyon County ZIP codes by income.
- How many carrier routes and mailboxes are in Lyon County?
- For the 4 of 9 ZIP codes in EDDM2GO's stored route library: 9 carrier routes reaching 2,283 residential and 147 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.