40223 ZIP Code, Louisville, KY

40223 is a ZIP code in Louisville, Kentucky in Jefferson County. It covers 12 square miles of land. The closest ZIP codes are 40243, 40242 and 40241. 22,798 people live here in 9,971 households, more than in 9 of every 10 Kentucky ZIP codes. At about 1,891 people per square mile it has suburban density, and most homes are owner-occupied (73%). Median household income is $96,607, well above the Kentucky median of $63,726.

Quick facts

Key figures

MeasureValue
Residents22,798
Households9,971
Median household income$96,607
Income per person$59,852
Median age43.1
Homeowners72.5%
Median home value$362,500
Median rent$1,482
Bachelor's degree or higher57.0%
Average commute (minutes)20.1
Households with kids under 1823.9%
Moved in the past year12.9%
Below the poverty line6.0%
Broadband internet96.5%
Speak a non-English language at home6.9%

Household income

% of householdsValue
<$10K4.8%
$10–15K1.6%
$15–25K3.3%
$25–35K4.8%
$35–50K7.2%
$50–75K16.2%
$75–100K14.4%
$100–150K19.8%
$150–200K9.1%
$200K+18.8%

Age

% of all residentsValue
<1011.8%
10–1911.2%
20–243.8%
25–3411.5%
35–4413.9%
45–5411.7%
55–6412.6%
65–7414.6%
75+8.8%

Tenure

% of housing unitsValue
Owned, with mortgage44.3%
Owned outright25.1%
Rented25.5%
Vacant5.1%

Type of building

% of housing unitsValue
Detached house62.1%
Townhome10.8%
2–4 units4.3%
5–19 units19.8%
20+ units3.2%
Mobile / other0.0%

Businesses in 40223

1,207 business establishments with 41,958 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

40223 has 21 USPS carrier routes with 11,261 residential and 1,365 business mailboxes. Open the EDDM route map.

Carrier routes in 40223

40223 has 21 USPS carrier routes (21 rural (R)) with 11,261 residential and 1,365 business mailboxes. Routes range from 17 homes (R075) to 827 homes (R081); the median route has 570 homes. The Census counted 9,971 households in 40223 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2492
250–4995
500–74912
750–9992
1,000–1,4990
1,500+0

Best routes in 40223 for…

Most businesses

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

  1. Route R075 — USPS business mailboxes 296, 17 homes
  2. Route R032 — USPS business mailboxes 220, 451 homes
  3. Route R041 — USPS business mailboxes 189, 211 homes
  4. Route R093 — USPS business mailboxes 160, 261 homes
  5. Route R013 — USPS business mailboxes 132, 557 homes

Select these 5 routes on the route map

Every carrier route in 40223

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
R013Rural557132$104,261———
R014Rural45511$189,216———
R015Rural6912$125,102———
R016Rural7241$68,781———
R025Rural6571$54,042———
R026Rural292120$79,528———
R031Rural68717$116,871———
R032Rural451220$80,856———
R033Rural51075$68,781———
R034Rural69444$79,528———
R039Rural4564$200,001+———
R041Rural211189$80,856———
R044Rural5703$125,102———
R045Rural6472$116,871———
R046Rural5500$142,112———
R048Rural6282$80,856———
R075Rural17296$189,216———
R080Rural77233$121,835———
R081Rural8277$142,112———
R087Rural60446$125,102———
R093Rural261160$166,736———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 40223 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 40223

Where it ranks

Mail every home in 40223

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.

Louisville EDDM mailing

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 40223, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 40223 in?
40223 is a Louisville, KY mailing address. By land area, 41% lies inside Louisville/Jefferson County metro government (balance), 25% lies inside Anchorage, 10% lies inside Middletown and 10% lies inside Jeffersontown.
What county is 40223 in?
40223 is in Jefferson County.
What is the population of 40223?
About 22,798 people (±1,224), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 23,227.
What is the median household income in 40223?
$96,607 (±$6,190), 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 40223?
21 USPS carrier routes with 11,261 residential and 1,365 business mailboxes (12,628 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 40223?
The closest, measured center to center: 40243 (1.3 mi, Middletown), 40242 (2.8 mi, Lyndon), 40241 (3.5 mi, Louisville/Jefferson County metro government (balance), KY), 40222 (3.9 mi, Louisville/Jefferson County metro government (balance), KY), 40056 (4.5 mi, Pewee Valley) and 40245 (5.1 mi, Louisville/Jefferson County metro government (balance), KY).

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