40509 ZIP Code, Lexington, KY

40509 is a ZIP code in Lexington, Kentucky — mostly in Fayette County (92% of its land), with smaller parts in Clark County. It covers 48 square miles of land. The closest ZIP codes are 40516, 40502 and 40515. 47,036 people live here in 19,395 households, which puts it among the most populous 1% of Kentucky ZIP codes. With about 984 people per square mile it is lightly settled, and owners and renters are mixed (61% own). Median household income is $94,804, above the Kentucky median of $63,726.

Quick facts

Key figures

MeasureValue
Residents47,036
Households19,395
Median household income$94,804
Income per person$51,034
Median age35.8
Homeowners60.7%
Median home value$366,300
Median rent$1,394
Bachelor's degree or higher57.4%
Average commute (minutes)22.6
Households with kids under 1833.0%
Moved in the past year17.8%
Below the poverty line8.4%
Broadband internet94.5%
Speak a non-English language at home18.5%

Household income

% of householdsValue
<$10K4.6%
$10–15K1.9%
$15–25K3.3%
$25–35K5.4%
$35–50K10.8%
$50–75K15.7%
$75–100K9.5%
$100–150K19.6%
$150–200K11.6%
$200K+17.6%

Age

% of all residentsValue
<1013.6%
10–1914.2%
20–245.8%
25–3414.7%
35–4413.8%
45–5415.2%
55–649.2%
65–747.3%
75+6.1%

Tenure

% of housing unitsValue
Owned, with mortgage44.5%
Owned outright14.0%
Rented37.6%
Vacant3.9%

Type of building

% of housing unitsValue
Detached house60.6%
Townhome12.1%
2–4 units4.8%
5–19 units15.0%
20+ units6.6%
Mobile / other0.9%

Businesses in 40509

1,586 business establishments with 29,760 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

40509 has 27 USPS carrier routes with 20,949 residential and 1,553 business mailboxes. Open the EDDM route map.

Carrier routes in 40509

40509 has 27 USPS carrier routes (14 city (C), 13 rural (R)) with 20,949 residential and 1,553 business mailboxes. Routes range from 93 homes (C025) to 1,237 homes (C033); the median route has 782 homes. The Census counted 19,395 households in 40509 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2491
250–4993
500–7498
750–9999
1,000–1,4996
1,500+0

Best routes in 40509 for…

Most businesses

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

  1. Route C025 — USPS business mailboxes 303, 93 homes
  2. Route C039 — USPS business mailboxes 164, 865 homes
  3. Route R001 — USPS business mailboxes 159, 346 homes
  4. Route C036 — USPS business mailboxes 153, 431 homes
  5. Route C019 — USPS business mailboxes 152, 1,136 homes

Select these 5 routes on the route map

Every carrier route in 40509

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C019City1,136152$46,528———
C020City1,15028$150,000———
C021City1,07268$50,141———
C024City37430$109,267———
C025City93303$56,549———
C027City6500$150,000———
C029City6511$79,649———
C030City1,21726$109,267———
C031City718127$66,363———
C032City1,04597$48,905———
C033City1,237131$28,287———
C036City431153$131,699———
C037City8310$66,363———
C039City865164$105,073———
R001Rural346159$139,772———
R015Rural5910$122,217———
R016Rural76911$122,217———
R017Rural66062$147,609———
R071Rural7821$122,217———
R072Rural8714$145,759———
R075Rural6610$145,759———
R076Rural94513$131,140———
R079Rural9030$139,772———
R081Rural7290$156,204———
R083Rural8562$145,759———
R084Rural55417$78,463———
R085Rural8124$104,992———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 40509 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

Areas that include 40509

Where it ranks

Mail every home in 40509

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) 40509, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 40509 in?
40509 is a Lexington, KY mailing address. By land area, 92% lies inside Lexington-Fayette urban county; the rest is outside any Census-defined city or community.
What county is 40509 in?
40509 is mostly in Fayette County (92% of its land), with smaller parts in Clark County.
What is the population of 40509?
About 47,036 people (±1,818), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 44,572.
What is the median household income in 40509?
$94,804 (±$9,939), compared with $63,726 for Kentucky as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 40509?
27 USPS carrier routes with 20,949 residential and 1,553 business mailboxes (22,504 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 40509?
The closest, measured center to center: 40516 (5.2 mi, Lexington-Fayette urban county, KY), 40502 (5.8 mi, Lexington-Fayette urban county, KY), 40515 (6 mi, Lexington-Fayette urban county, KY), 40505 (6.2 mi, Lexington-Fayette urban county, KY), 40517 (6.2 mi, Lexington-Fayette urban county, KY) and 40526 (7.1 mi, Lexington-Fayette urban county, KY).

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