Residential delivery area · Kansas
ZIP Code 66040: La Cygne, KS
ZIP code 66040 uses the postal name La Cygne, Kansas and lies mostly in Linn County (70% of its land) with the rest in Miami County (Census 2020 ZIP-county file). About 3,700 people live there (Census Bureau, ACS 2020-2024). Median household income is $56,323 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Linn Valley (2%) and La Cygne (1%); 97% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- La Cygne · its only residential ZIP
- County
- Linn County (70%); Miami County (30%)
- Census places
- Linn Valley (2%); La Cygne (1%)
- Metro area
- Kansas City, MO-KS
- House districts
- KS-2 (70%), KS-3 (30%) 119th Congress, by share of land
- State
- Kansas
- Time zone
- Central
- Land area
- 134.2 sq mi · 27 people per sq mi
Where is ZIP code 66040?
66040 centers on 38.357°, -94.738° and covers 134.2 square miles of land plus 6.5 of water. It borders 8 ZIP codes: 66026, 64723, 66075, 64722, 66072, 64742, 66053, 66071.
The map draws ZIP code areas only. For the streets inside 66040, 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 66040 compare with the rest of Linn County?
| Measure | 66040 | In Linn County | In KS |
|---|---|---|---|
| People (ACS 2020-2024) | 3,651 | 1st of 11 | 158th of 704 |
| Median household income | $56k | 4th of 4 | 236th of 286 |
| Median home value | $174k | 2nd of 3 | 140th of 282 |
Its median household income is higher than in 23% of U.S. residential ZIP codes, and it is denser than 31% 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 66040?
The 2020 Census counted 3,463 people in 66040; the ACS, which samples households over 2020-2024, estimates 3,651. Between the 2010 and 2020 censuses its population grew 1.7% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 3,651
- 2020 Census count
- 3,463+1.7% since 2010 (3,404)
- Households
- 1,659
- Median age
- 48.0
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 66040?
Of the 3,651 people the ACS estimates in 66040, 19.3% are under 18 and 24.3% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (81.8%), then Hispanic or Latino (10.8%).
- Under 1819.3%
- 18 to 6456.4%
- 65 and older24.3%
- White, not Hispanic81.8%
- Hispanic or Latino10.8%
- Other or two or more4.8%
- Black, not Hispanic2.4%
- Asian, not Hispanic0.2%
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 66040 earn?
Median household income is $56,323 (ACS 2020-2024), the 4th highest of the 4 ranked ZIP codes in Linn County. It is not measurably different from 2015-2019 ($67,316 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $56,323
- Income per person
- $32,180
- Below the poverty line
- 7.7%
- Unemployed (of the labor force)
- 3.8%
- Adults 25+ with a bachelor's degree
- 19.6%
- Adjusted gross income per tax return, 2022
- $63,5731,690 returns; wages 71% 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 66040?
FHFA's house price index for 66040, built from repeat sales and appraisals of the same homes, rose 113% from 2015 to 2025 and rose 72% from 2020 to 2025.
- Median home value (owners' estimate)
- $174,300
- Median gross rent
- $868
- Homes owned by their occupants
- 86.1%
- Housing units
- 2,091
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 66040?
68 business establishments had a location in this ZIP code in 2023, 10 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction10
- Retail trade9
- Accommodation and food services9
- Other services (except public administration)8
- Manufacturing7
- Finance and insurance5
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 66040?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 66026 | Fontana | 840 | $78k | 7.5 mi |
| 64723 | Amsterdam, MO | 452 | $64k | 9.7 mi |
| 66075 | Pleasanton | 2,497 | $62k | 11.2 mi |
| 64722 | Amoret, MO | 325 | $68k | 11.4 mi |
| 66072 | Parker | 1,211 | $102k | 13.1 mi |
| 64742 | Drexel, MO | 2,185 | $71k | 14.9 mi |
| 66053 | Louisburg | 7,834 | $89k | 15.9 mi |
| 66071 | Paola | 12,400 | $84k | 16.6 mi |
| 66056 | Mound City | 1,383 | $58k | 15.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.