Residential delivery area · Iowa
ZIP Code 52037: Delmar, IA
ZIP code 52037 uses the postal name Delmar, Iowa and lies mostly in Clinton County (98% of its land) with the rest in Jackson County (Census 2020 ZIP-county file). About 1,200 people live there (Census Bureau, ACS 2020-2024). Median household income is $90,813 (Census Bureau, ACS 2020-2024). By Census place, 1% of its land lies in Delmar; 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2022
- ZBP2023
- IRS2022
- Town
- Delmar · its only residential ZIP
- County
- Clinton County (98%); Jackson County (2%)
- Census places
- Delmar
- Micro area
- Clinton, IA
- House district
- IA-1 119th Congress
- State
- Iowa
- Time zone
- Central
- Land area
- 68.3 sq mi · 17 people per sq mi
Where is ZIP code 52037?
52037 centers on 41.967°, -90.634° and covers 68.3 square miles of land plus 0.0 of water. It borders 6 ZIP codes: 52774, 52731, 52254, 52060, 52751, 52742.
The map draws ZIP code areas only. For the streets inside 52037, 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 52037 compare with the rest of Clinton County?
| Measure | 52037 | In Clinton County | In IA |
|---|---|---|---|
| People (ACS 2020-2024) | 1,172 | 7th of 21 | 416th of 970 |
| Median household income | $91k | 2nd of 6 | 100th of 396 |
| Median home value | $198k | 2nd of 6 | 185th of 423 |
Its median household income is higher than in 74% of U.S. residential ZIP codes, and it is denser than 24% 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 52037?
The 2020 Census counted 1,216 people in 52037; the ACS, which samples households over 2020-2024, estimates 1,172. Between the 2010 and 2020 censuses its population fell 0.6% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 1,172±247 (90% margin)
- 2020 Census count
- 1,216−0.6% since 2010 (1,223)
- Households
- 435
- Median age
- 42.1
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 52037?
Of the 1,172 people the ACS estimates in 52037, 23.0% are under 18 and 22.4% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (96.2%).
- Under 1823.0%
- 18 to 6454.6%
- 65 and older22.4%
- White, not Hispanic96.2%
- Black, not Hispanic1.8%
- Hispanic or Latino1.5%
- Other or two or more0.5%
- 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 52037 earn?
Median household income is $90,813 (ACS 2020-2024), the 2nd highest of the 6 ranked ZIP codes in Clinton County. It is not measurably different from 2015-2019 ($77,748 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $90,813±$15,318
- Income per person
- $36,206
- Below the poverty line
- 4.1%
- Unemployed (of the labor force)
- 3.0%
- Adults 25+ with a bachelor's degree
- 23.0%
- Adjusted gross income per tax return, 2022
- $74,360580 returns; wages 67% 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 52037?
- Median home value (owners' estimate)
- $198,400
- Median gross rent
- $941
- Homes owned by their occupants
- 89.4%
- Housing units
- 479
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 52037?
20 business establishments had a location in this ZIP code in 2023, 4 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction4
- Finance and insurance3
- Administrative and support and waste management and remediation services3
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 52037?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 52774 | Welton | 101 | $71k | 4.6 mi |
| 52731 | Charlotte | 867 | $88k | 7.6 mi |
| 52254 | Lost Nation | 1,004 | $64k | 8.9 mi |
| 52060 | Maquoketa | 8,007 | $68k | 9.6 mi |
| 52751 | Grand Mound | 976 | $82k | 9.7 mi |
| 52742 | De Witt | 7,284 | $98k | 10.7 mi |
| 52069 | Preston | 1,743 | $75k | 12.3 mi (near) |
| 52750 | Goose Lake | 654 | $93k | 12.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.