51521 ZIP Code, Avoca, IA
51521 is a ZIP code in Avoca, Iowa — mostly in Pottawattamie County (69% of its land), with smaller parts in Shelby County. It covers 87 square miles of land. The closest ZIP codes are 51570, 51536 and 51577. 1,953 people live here in 878 households. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (73%). Median household income is $73,769, close to the Iowa median of $75,059; the median age is 45.2, older than most ZIP codes.
Quick facts
- Mailing city: Avoca, IA
- County: Pottawattamie County
- Land area: 87 sq mi
- Population: 1,953
- Median household income: $73,769
Key figures
| Measure | Value |
|---|---|
| Residents | 1,953 |
| Households | 878 |
| Median household income | $73,769 |
| Income per person | $46,316 |
| Median age | 45.2 |
| Homeowners | 73.3% |
| Median home value | $202,800 |
| Median rent | $860 |
| Bachelor's degree or higher | 28.0% |
| Average commute (minutes) | 23.3 |
| Households with kids under 18 | 24.5% |
| Moved in the past year | 11.0% |
| Below the poverty line | 8.9% |
| Broadband internet | 81.7% |
| Speak a non-English language at home | 1.0% |
Household income
| % of households | Value |
|---|---|
| <$10K | 2.2% |
| $10–15K | 3.9% |
| $15–25K | 7.5% |
| $25–35K | 4.8% |
| $35–50K | 11.0% |
| $50–75K | 24.4% |
| $75–100K | 13.0% |
| $100–150K | 16.6% |
| $150–200K | 9.1% |
| $200K+ | 7.5% |
Age
| % of all residents | Value |
|---|---|
| <10 | 14.2% |
| 10–19 | 9.9% |
| 20–24 | 5.6% |
| 25–34 | 10.7% |
| 35–44 | 9.6% |
| 45–54 | 12.7% |
| 55–64 | 10.8% |
| 65–74 | 16.4% |
| 75+ | 10.1% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 36.6% |
| Owned outright | 30.4% |
| Rented | 24.0% |
| Vacant | 8.9% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 88.2% |
| Townhome | 1.3% |
| 2–4 units | 3.0% |
| 5–19 units | 4.3% |
| 20+ units | 1.8% |
| Mobile / other | 1.5% |
Businesses in 51521
63 business establishments with 480 employees (ZIP Codes Business Patterns 2023).
- Retail Trade: 13
- Accommodation and Food Services: 10
- Construction: 8
- Other Services (except Public Administration): 7
- Transportation and Warehousing: 6
- Wholesale Trade: 5
- Professional, Scientific, and Technical Services: 4
- Health Care and Social Assistance: 3
EDDM carrier routes
See every USPS carrier route in 51521 with residential and business mailbox counts on the route map. Open the EDDM route map.
Nearby ZIP codes
- 51570 — Shelby city, IA (6.9 mi)
- 51536 — Hancock city, IA (7.1 mi)
- 51577 — Walnut city, IA (7.4 mi)
- 51537 — Harlan city, IA (11.6 mi)
- 51553 — Minden city, IA (11.6 mi)
- 51552 — Marne city, IA (11.9 mi)
- 51560 — Oakland city, IA (12.2 mi)
- 51563 — Persia city, IA (13.8 mi)
Areas that include 51521
- Avoca, IA ZIP codes — 1 ZIP code
- Pottawattamie County ZIP codes — 23 ZIP codes
- Shelby County ZIP codes — 16 ZIP codes
- Iowa ZIP code data
Where it ranks
- No. 5 of 14: highest share of residents who moved in during the past year in Pottawattamie County
- No. 5 of 14: highest median age in Pottawattamie County
- No. 2 of 13: fastest population growth in Pottawattamie County
Mail every home in 51521
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) 51521, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 51521 in?
- 51521 is a Avoca, IA mailing address. By land area, 3% lies inside Avoca; the rest is outside any Census-defined city or community.
- What county is 51521 in?
- 51521 is mostly in Pottawattamie County (69% of its land), with smaller parts in Shelby County.
- What is the population of 51521?
- About 1,953 people (±193), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 2,202.
- What is the median household income in 51521?
- $73,769 (±$4,867), 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 51521?
- EDDM2GO's stored route library does not include 51521 yet. The EDDM route map loads its carrier routes and mailbox counts when you search the ZIP code.
- What ZIP codes are near 51521?
- The closest, measured center to center: 51570 (6.9 mi, Shelby), 51536 (7.1 mi, Hancock), 51577 (7.4 mi, Walnut), 51537 (11.6 mi, Harlan), 51553 (11.6 mi, Minden) and 51552 (11.9 mi, Marne).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.