51535 ZIP Code, Griswold, IA
51535 is a ZIP code in Griswold, Iowa — mostly in Cass County (56% of its land), with smaller parts in Pottawattamie County. It covers 135 square miles of land. The closest ZIP codes are 51532, 51544 and 50847. 1,697 people live here in 740 households. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (79%). Median household income is $76,371, close to the Iowa median of $75,059; the median age is 50.4, older than most ZIP codes.
Quick facts
- Mailing city: Griswold, IA
- County: Cass County
- Land area: 135 sq mi
- Population: 1,697
- Median household income: $76,371
Key figures
| Measure | Value |
|---|---|
| Residents | 1,697 |
| Households | 740 |
| Median household income | $76,371 |
| Income per person | $43,285 |
| Median age | 50.4 |
| Homeowners | 78.6% |
| Median home value | $152,300 |
| Median rent | $950 |
| Bachelor's degree or higher | 22.6% |
| Average commute (minutes) | 23.3 |
| Households with kids under 18 | 25.5% |
| Moved in the past year | 9.4% |
| Below the poverty line | 7.9% |
| Broadband internet | 83.8% |
| Speak a non-English language at home | 0.0% |
Household income
| % of households | Value |
|---|---|
| <$10K | 2.4% |
| $10–15K | 2.3% |
| $15–25K | 6.4% |
| $25–35K | 10.5% |
| $35–50K | 7.8% |
| $50–75K | 18.2% |
| $75–100K | 13.2% |
| $100–150K | 20.3% |
| $150–200K | 5.7% |
| $200K+ | 13.1% |
Age
| % of all residents | Value |
|---|---|
| <10 | 12.3% |
| 10–19 | 9.0% |
| 20–24 | 7.2% |
| 25–34 | 6.7% |
| 35–44 | 8.4% |
| 45–54 | 16.1% |
| 55–64 | 13.9% |
| 65–74 | 12.2% |
| 75+ | 14.1% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 26.3% |
| Owned outright | 47.3% |
| Rented | 20.0% |
| Vacant | 6.4% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 92.2% |
| Townhome | 1.4% |
| 2–4 units | 1.5% |
| 5–19 units | 1.5% |
| 20+ units | 0.0% |
| Mobile / other | 3.4% |
Businesses in 51535
49 business establishments with 235 employees (ZIP Codes Business Patterns 2023).
- Other Services (except Public Administration): 9
- Construction: 5
- Transportation and Warehousing: 5
- Retail Trade: 4
- Finance and Insurance: 4
- Health Care and Social Assistance: 4
- Administrative and Support and Waste Management and Remediation Services: 3
EDDM carrier routes
See every USPS carrier route in 51535 with residential and business mailbox counts on the route map. Open the EDDM route map.
Nearby ZIP codes
- 51532 — Elliott city, IA (6.2 mi)
- 51544 — Lewis city, IA (6.2 mi)
- 50847 — Grant city, IA (9.5 mi)
- 50843 — Cumberland city, IA (12.6 mi)
- 50022 — Atlantic city, IA (14.5 mi)
- 51525 — Carson city, IA (15.2 mi)
- 51560 — Oakland city, IA (15.5 mi)
- 51566 — Red Oak city, IA (15.6 mi)
Areas that include 51535
- Griswold, IA ZIP codes — 1 ZIP code
- Cass County ZIP codes — 9 ZIP codes
- Pottawattamie County ZIP codes — 23 ZIP codes
- Iowa ZIP code data
Mail every home in 51535
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 51535, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 51535 in?
- 51535 is a Griswold, IA mailing address. None of its land lies inside a Census-defined city or community.
- What county is 51535 in?
- 51535 is mostly in Cass County (56% of its land), with smaller parts in Pottawattamie County.
- What is the population of 51535?
- About 1,697 people (±226), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 1,764.
- What is the median household income in 51535?
- $76,371 (±$8,928), compared with $75,059 for Iowa as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 51535?
- EDDM2GO's stored route library does not include 51535 yet. The EDDM route map loads its carrier routes and mailbox counts when you search the ZIP code.
- What ZIP codes are near 51535?
- The closest, measured center to center: 51532 (6.2 mi, Elliott), 51544 (6.2 mi, Lewis), 50847 (9.5 mi, Grant), 50843 (12.6 mi, Cumberland), 50022 (14.5 mi, Atlantic) and 51525 (15.2 mi, Carson).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.