Cass County, IA ZIP Codes
9 ZIP codes cover all or part of Cass County, Iowa. The Census Bureau counts 13,096 residents in the county, with a median household income of $63,013 and a median home value of $150,300. Median household income ranges from $63,125 in 50022 to $76,371 in 51535. Its largest communities include Atlantic, Griswold, Anita, Lewis and Massena.
Cass County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 13,096 |
| Households | 5,844 |
| Median household income | $63,013 |
| Median home value | $150,300 |
| Median age | 43.5 |
| Median rent | $777 |
All 9 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 14,154 |
| Households (sum of ZIP codes) | 6,252 |
| Median household income, range across ZIP codes | $63,125 (50022) to $76,371 (51535) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $66,307 |
| Homeowners | 72.2% |
| Households with kids under 18 | 25.9% |
| Moved in the past year | 8.3% |
| Carrier routes in EDDM2GO's route library | 14 routes, 4,644 homes (5 of 9 ZIP codes) |
Top facts
- Highest median household income in Cass County: 51535 ($76,371)
- Most residents: 50022 (8,526 people)
- Highest homeownership: 50020 (84.5% own their home)
- Most households with kids: 50020 (27.3% of households)
- Most new movers: 50022 (10.2% moved in last year)
- Youngest median age: 50022 (41.8 years)
- Highest median home value: 50022 ($157,600)
Every ZIP code in Cass County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 50022 | Atlantic | 8,526 | 3,798 | $63,125 | $157,600 | 66.3% | 26.5% | 10.2% | 8 | 4,055 | 89% of its land |
| 51535 | Griswold | 1,697 | 740 | $76,371 | $152,300 | 78.6% | 25.5% | 9.4% | — | — | 56% of its land |
| 50020 | Anita | 1,197 | 509 | $75,417 | $154,600 | 84.5% | 27.3% | 6.4% | 2 | 525 | 77% of its land |
| 51544 | Lewis | 793 | 321 | $48,313 | $81,000 | 81.6% | 23.4% | 0.9% | 1 | 160 | 74% of its land |
| 50853 | Massena | 716 | 313 | $65,208 | $169,100 | 85.3% | 29.7% | 4.7% | — | — | 98% of its land |
| 50843 | Cumberland | 540 | 229 | $56,125 | $105,000 | 76.9% | 25.3% | 3.9% | — | — | 92% of its land |
| 50837 | Bridgewater | 282 | 136 | $63,000 | $116,700 | 95.6% | 29.4% | 3.2% | — | — | 17% of its land |
| 50274 | Wiota | 234 | 122 | $71,667 | $162,100 | 81.1% | 5.7% | 0.0% | 2 | 156 | 100% of its land |
| 51552 | Marne | 169 | 84 | $90,000 | $125,000 | 61.9% | 15.5% | 1.2% | 1 | 93 | 63% of its land |
A ZIP code is listed for Cass 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
- Atlantic — 6,763 residents · 1 ZIP code
- Griswold — 975 residents · 1 ZIP code
- Anita — 957 residents · 1 ZIP code
- Lewis — 461 residents · 1 ZIP code
- Massena — 383 residents · 1 ZIP code
- Cumberland — 302 residents · 1 ZIP code
- Marne — 98 residents · 1 ZIP code
- Wiota — 78 residents · 1 ZIP code
Price a mailing to Cass County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Cass County, IA?
- 50022, 51535, 50020, 51544, 50853, 50843, 50837, 50274 and 51552. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Cass County?
- 13,096 residents in 5,844 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Cass County?
- $63,013 for the county as a whole. Its ZIP codes range from $63,125 (50022) to $76,371 (51535).
- Which Cass County ZIP code has the highest median household income?
- 51535, at $76,371, among ZIP codes with at least 1,000 residents.
- How many carrier routes and mailboxes are in Cass County?
- For the 5 of 9 ZIP codes in EDDM2GO's stored route library: 14 carrier routes reaching 4,644 residential and 345 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.