Residential delivery area · Iowa
ZIP Code 52301: Marengo, IA
ZIP code 52301 uses the postal name Marengo, Iowa and lies mostly in Iowa County (96% of its land) with the rest in Benton County (Census 2020 ZIP-county file). About 4,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $70,150 (Census Bureau, ACS 2020-2024). By Census place, 2% of its land lies in Marengo; 98% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Marengo · its only residential ZIP
- County
- Iowa County (96%); Benton County (4%)
- Census places
- Marengo
- House districts
- IA-1 (96%), IA-2 (4%) 119th Congress, by share of land
- State
- Iowa
- Time zone
- Central
- Land area
- 126.3 sq mi · 32 people per sq mi
Where is ZIP code 52301?
52301 centers on 41.788°, -92.083° and covers 126.3 square miles of land plus 0.2 of water. It borders 10 ZIP codes: 52220, 52334, 52209, 52251, 52257, 52203, 52354, 52361, 52208, 52318.
The map draws ZIP code areas only. For the streets inside 52301, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 52301 compare with the rest of Iowa County?
| Measure | 52301 | In Iowa County | In IA |
|---|---|---|---|
| People (ACS 2020-2024) | 4,028 | 2nd of 20 | 162nd of 970 |
| Median household income | $70k | 5th of 7 | 269th of 396 |
| Median home value | $160k | 6th of 9 | 293rd of 423 |
Its median household income is higher than in 47% of U.S. residential ZIP codes, and it is denser than 34% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 52301?
The 2020 Census counted 3,745 people in 52301; the ACS, which samples households over 2020-2024, estimates 4,028. Between the 2010 and 2020 censuses its population fell 3.3% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 4,028±446 (90% margin)
- 2020 Census count
- 3,745−3.3% since 2010 (3,873)
- Households
- 1,681
- Median age
- 42.7
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 52301?
Of the 4,028 people the ACS estimates in 52301, 23.3% are under 18 and 22.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (96.1%).
- Under 1823.3%
- 18 to 6454.5%
- 65 and older22.2%
- White, not Hispanic96.1%
- Other or two or more2.9%
- Black, not Hispanic0.8%
- Hispanic or Latino0.2%
- Asian, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 52301 earn?
Median household income is $70,150 (ACS 2020-2024), the 5th highest of the 7 ranked ZIP codes in Iowa County. It is not measurably different from 2015-2019 ($69,715 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $70,150±$12,597
- Income per person
- $33,446
- Below the poverty line
- 9.4%
- Unemployed (of the labor force)
- 2.6%
- Adults 25+ with a bachelor's degree
- 14.8%
- Adjusted gross income per tax return, 2022
- $68,7211,720 returns; wages 69% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 52301?
FHFA's house price index for 52301, built from repeat sales and appraisals of the same homes, rose 68% from 2015 to 2025 and rose 48% from 2020 to 2025, and moved +2.3% in 2025.
- Median home value (owners' estimate)
- $160,300
- Median gross rent
- $730
- Homes owned by their occupants
- 77.1%
- Housing units
- 1,840
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 52301?
90 business establishments had a location in this ZIP code in 2023, 3 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction15
- Other services (except public administration)14
- Retail trade13
- Health care and social assistance9
- Professional, scientific, and technical services7
- Administrative and support and waste management and remediation services6
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 52301?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 52220 | Conroy | 199 | – | 6.1 mi |
| 52334 | South Amana | 181 | – | 8.2 mi |
| 52209 | Blairstown | 1,158 | $86k | 8.4 mi |
| 52251 | Ladora | 544 | $88k | 8.4 mi |
| 52257 | Luzerne | 216 | $95k | 9.9 mi |
| 52203 | Amana | 2,231 | $102k | 10.0 mi |
| 52354 | Watkins | 420 | $113k | 10.2 mi |
| 52361 | Williamsburg | 4,582 | $61k | 10.8 mi |
| 52208 | Belle Plaine | 2,877 | $74k | 10.9 mi |
| 52318 | Norway | 1,099 | $86k | 11.9 mi |
| 52307 | Middle Amana | 63 | $43k | 9.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.