Residential delivery area · Kansas
ZIP Code 66434: Hiawatha, KS
ZIP code 66434 uses the postal name Hiawatha, Kansas and lies entirely in Brown County (Census 2020 ZIP-county file). About 4,700 people live there (Census Bureau, ACS 2020-2024). Median household income is $76,613 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Hiawatha (1%), Reserve (under 1%), Willis (under 1%) and Hamlin (0%); 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Hiawatha · its only residential ZIP
- County
- Brown County
- Census places
- Hiawatha (1%); Reserve (under 1%); Willis (under 1%); Hamlin (0%)
- House district
- KS-2 119th Congress
- State
- Kansas
- Time zone
- Central
- Land area
- 219.7 sq mi · 22 people per sq mi
Where is ZIP code 66434?
66434 centers on 39.863°, -95.555° and covers 219.7 square miles of land plus 0.4 of water. It borders 10 ZIP codes: 66515, 66425, 66532, 66527, 66094, 66439, 66424, 68431, 68433, 68355.
The map draws ZIP code areas only. For the streets inside 66434, 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 66434 compare with the rest of Brown County?
| Measure | 66434 | In Brown County | In KS |
|---|---|---|---|
| People (ACS 2020-2024) | 4,740 | 1st of 13 | 141st of 704 |
| Median household income | $77k | 1st of 3 | 107th of 286 |
| Median home value | $143k | 2nd of 3 | 188th of 282 |
Its median household income is higher than in 57% of U.S. residential ZIP codes, and it is denser than 27% 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 66434?
The 2020 Census counted 4,783 people in 66434; the ACS, which samples households over 2020-2024, estimates 4,740. Between the 2010 and 2020 censuses its population fell 0.9% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 4,740
- 2020 Census count
- 4,783−0.9% since 2010 (4,828)
- Households
- 1,886
- Median age
- 41.2
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 66434?
Of the 4,740 people the ACS estimates in 66434, 25.2% are under 18 and 19.5% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (88.0%).
- Under 1825.2%
- 18 to 6455.3%
- 65 and older19.5%
- White, not Hispanic88.0%
- Other or two or more6.9%
- Hispanic or Latino2.8%
- Black, not Hispanic2.0%
- 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 66434 earn?
Median household income is $76,613 (ACS 2020-2024), the highest of the 3 ranked ZIP codes in Brown County. It rose from $60,270 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $76,613±$8,991
- Income per person
- $40,257
- Below the poverty line
- 10.5%
- Unemployed (of the labor force)
- 4.5%
- Adults 25+ with a bachelor's degree
- 20.2%
- Adjusted gross income per tax return, 2022
- $71,2752,180 returns; wages 58% 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 66434?
FHFA's house price index for 66434, built from repeat sales and appraisals of the same homes, rose 94% from 2015 to 2025 and rose 60% from 2020 to 2025, and moved +13.6% in 2025.
- Median home value (owners' estimate)
- $143,400
- Median gross rent
- $625
- Homes owned by their occupants
- 79.1%
- Housing units
- 2,215
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 66434?
171 business establishments had a location in this ZIP code in 2023, 2 more than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance30
- Construction22
- Accommodation and food services20
- Retail trade19
- Other services (except public administration)16
- Finance and insurance13
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 66434?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 66515 | Morrill | 362 | $89k | 9.4 mi |
| 66425 | Fairview | 391 | $61k | 9.7 mi |
| 66532 | Robinson | 527 | $77k | 9.8 mi |
| 66527 | Powhattan | 244 | $61k | 10.4 mi |
| 66094 | White Cloud | 437 | $72k | 13.1 mi |
| 66439 | Horton | 2,578 | $53k | 14.3 mi |
| 66424 | Everest | 486 | $59k | 15.3 mi |
| 68431 | Rulo, NE | 269 | $75k | 15.4 mi |
| 68433 | Salem, NE | 196 | $46k | 16.3 mi |
| 68355 | Falls City, NE | 4,860 | $57k | 18.0 mi |
| 66534 | Sabetha | 3,381 | $73k | 15.0 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.