Residential delivery area · Iowa
ZIP Code 50621: Conrad, IA
ZIP code 50621 uses the postal name Conrad, Iowa and lies mostly in Grundy County (84% of its land) with the rest in Marshall County (Census 2020 ZIP-county file). About 1,600 people live there (Census Bureau, ACS 2020-2024). Median household income is $88,077 (Census Bureau, ACS 2020-2024). By Census place, 2% of its land lies in Conrad; 98% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Conrad · its only residential ZIP
- County
- Grundy County (84%); Marshall County (16%)
- Census places
- Conrad
- Metro area
- Waterloo-Cedar Falls, IA
- House districts
- IA-2 (84%), IA-4 (16%) 119th Congress, by share of land
- State
- Iowa
- Time zone
- Central
- Land area
- 62.9 sq mi · 25 people per sq mi
Where is ZIP code 50621?
50621 centers on 42.247°, -92.919° and covers 62.9 square miles of land. It borders 7 ZIP codes: 50269, 50609, 50148, 50258, 50638, 50627, 50158.
The map draws ZIP code areas only. For the streets inside 50621, 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 50621 compare with the rest of Grundy County?
| Measure | 50621 | In Grundy County | In IA |
|---|---|---|---|
| People (ACS 2020-2024) | 1,601 | 9th of 17 | 333rd of 970 |
| Median household income | $88k | 4th of 12 | 109th of 396 |
| Median home value | $215k | 5th of 11 | 149th of 423 |
Its median household income is higher than in 71% of U.S. residential ZIP codes, and it is denser than 30% 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 50621?
The 2020 Census counted 1,450 people in 50621; the ACS, which samples households over 2020-2024, estimates 1,601. Between the 2010 and 2020 censuses its population fell 5.2% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 1,601±162 (90% margin)
- 2020 Census count
- 1,450−5.2% since 2010 (1,530)
- Households
- 656
- Median age
- 47.8
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 50621?
Of the 1,601 people the ACS estimates in 50621, 19.1% are under 18 and 28.9% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (93.6%).
- Under 1819.1%
- 18 to 6452.1%
- 65 and older28.9%
- White, not Hispanic93.6%
- Hispanic or Latino3.1%
- Black, not Hispanic1.6%
- Other or two or more1.4%
- Asian, not Hispanic0.3%
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 50621 earn?
Median household income is $88,077 (ACS 2020-2024), the 4th highest of the 12 ranked ZIP codes in Grundy County. It is not measurably different from 2015-2019 ($80,295 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $88,077±$14,332
- Income per person
- $45,311
- Below the poverty line
- 3.9%
- Unemployed (of the labor force)
- 0.9%
- Adults 25+ with a bachelor's degree
- 29.6%
- Adjusted gross income per tax return, 2022
- $86,851720 returns; wages 59% 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 50621?
FHFA's house price index for 50621, built from repeat sales and appraisals of the same homes, rose 70% from 2015 to 2025 and rose 41% from 2020 to 2025.
- Median home value (owners' estimate)
- $214,700
- Median gross rent
- $840
- Homes owned by their occupants
- 78.2%
- Housing units
- 743
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 50621?
48 business establishments had a location in this ZIP code in 2023, 5 fewer than in 2018; the most are in administrative and support and waste management and remediation services (ZIP Code Business Patterns).
- Administrative and support and waste management and remediation services8
- Retail trade7
- Wholesale trade6
- Other services (except public administration)6
- Health care and social assistance4
- Manufacturing3
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 50621?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 50269 | Whitten | 164 | $93k | 4.8 mi |
| 50609 | Beaman | 377 | $90k | 5.8 mi |
| 50148 | Liscomb | 406 | $84k | 6.0 mi |
| 50258 | Union | 958 | $84k | 8.0 mi |
| 50638 | Grundy Center | 3,441 | $85k | 9.9 mi |
| 50627 | Eldora | 3,276 | $75k | 11.4 mi |
| 50158 | Marshalltown | 31,396 | $70k | 13.7 mi |
| 50005 | Albion | 812 | $77k | 9.9 mi (near) |
| 50652 | Lincoln | 113 | $65k | 11.7 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.