What city is 66040 in?

66040 is a La Cygne, KS mailing address. By land area, 2% lies inside Linn Valley and 1% lies inside La Cygne; the rest is outside any Census-defined city or community.

What is the population of 66040?

About 3,651 people (±324), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 3,463.

What is the median household income in 66040?

$56,323 (±$3,567), compared with $74,275 for Kansas as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 66040?

3 USPS carrier routes with 1,659 residential and 45 business mailboxes (1,704 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 66040?

The closest, measured center to center: 66026 (7.5 mi, Fontana), 64723 (9.7 mi, Amsterdam), 66075 (11.2 mi, Pleasanton), 64722 (11.4 mi, Amoret), 66072 (13.1 mi, Parker) and 64742 (14.9 mi, Drexel).

66040 ZIP Code, La Cygne, KS

Q: What county is 66040 in?

66040 is mostly in Linn County (70% of its land), with smaller parts in Miami County.

66040 is a ZIP code in La Cygne, Kansas — mostly in Linn County (70% of its land), with smaller parts in Miami County. It covers 134 square miles of land. The closest ZIP codes are 66026, 64723 and 66075. 3,651 people live here in 1,659 households. It is rural, with fewer than 100 people per square mile, and most homes are owner-occupied (86%). Median household income is $56,323, below the Kansas median of $74,275; the median age is 48.0, older than most ZIP codes.

Quick facts

Mailing city: La Cygne, KS
County: Linn County
Land area: 134 sq mi
Population: 3,651
Median household income: $56,323
Carrier routes: 3 (1,659 homes)

Key figures

Measure	Value
Residents	3,651
Households	1,659
Median household income	$56,323
Income per person	$32,180
Median age	48
Homeowners	86.1%
Median home value	$174,300
Median rent	$868
Bachelor's degree or higher	19.6%
Average commute (minutes)	40.8
Households with kids under 18	28.5%
Moved in the past year	13.1%
Below the poverty line	7.7%
Broadband internet	86.0%
Speak a non-English language at home	8.7%

Household income

% of households	Value
<$10K	2.6%
$10–15K	2.2%
$15–25K	8.4%
$25–35K	13.0%
$35–50K	11.2%
$50–75K	26.3%
$75–100K	14.4%
$100–150K	13.4%
$150–200K	6.9%
$200K+	1.6%

Age

% of all residents	Value
<10	8.2%
10–19	14.4%
20–24	6.8%
25–34	7.4%
35–44	6.8%
45–54	19.8%
55–64	12.2%
65–74	17.6%
75+	6.7%

Tenure

% of housing units	Value
Owned, with mortgage	34.6%
Owned outright	34.4%
Rented	10.8%
Vacant	20.2%

Type of building

% of housing units	Value
Detached house	81.0%
Townhome	0.8%
2–4 units	3.9%
5–19 units	0.1%
20+ units	0.4%
Mobile / other	13.7%

Businesses in 66040

68 business establishments with 525 employees (ZIP Codes Business Patterns 2023).

Construction: 10
Retail Trade: 9
Accommodation and Food Services: 9
Other Services (except Public Administration): 8
Manufacturing: 7
Finance and Insurance: 5
Utilities: 4
Health Care and Social Assistance: 3

EDDM carrier routes

66040 has 3 USPS carrier routes with 1,659 residential and 45 business mailboxes. Open the EDDM route map.

Carrier routes in 66040

66040 has 3 USPS carrier routes (3 rural (R)) with 1,659 residential and 45 business mailboxes. Routes range from 400 homes (R002) to 792 homes (R003); the median route has 467 homes. The Census counted 1,659 households in 66040 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	2
500–749	0
750–999	1
1,000–1,499	0
1,500+	0

Best routes in 66040 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

Route R001 — USPS business mailboxes 30, 467 homes
Route R002 — USPS business mailboxes 11, 400 homes
Route R003 — USPS business mailboxes 4, 792 homes

Select these 3 routes on the route map

Every carrier route in 66040

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
R001	Rural	467	30	$59,097	—	—	—
R002	Rural	400	11	$77,878	—	—	—
R003	Rural	792	4	$77,878	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 66040 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

66026 — Fontana city, KS (7.5 mi)
64723 — Amsterdam city, MO (9.7 mi)
66075 — Pleasanton city, KS (11.2 mi)
64722 — Amoret city, MO (11.4 mi)
66072 — Parker city, KS (13.1 mi)
64742 — Drexel city, MO (14.9 mi)
66056 — Mound City city, KS (15.3 mi)
66053 — Louisburg city, KS (15.9 mi)

Areas that include 66040

Mail every home in 66040

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 66040, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 66040 in?: 66040 is a La Cygne, KS mailing address. By land area, 2% lies inside Linn Valley and 1% lies inside La Cygne; the rest is outside any Census-defined city or community.
What county is 66040 in?: 66040 is mostly in Linn County (70% of its land), with smaller parts in Miami County.
What is the population of 66040?: About 3,651 people (±324), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 3,463.
What is the median household income in 66040?: $56,323 (±$3,567), compared with $74,275 for Kansas as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 66040?: 3 USPS carrier routes with 1,659 residential and 45 business mailboxes (1,704 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 66040?: The closest, measured center to center: 66026 (7.5 mi, Fontana), 64723 (9.7 mi, Amsterdam), 66075 (11.2 mi, Pleasanton), 64722 (11.4 mi, Amoret), 66072 (13.1 mi, Parker) and 64742 (14.9 mi, Drexel).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.