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zipcodes.pro — ZIP/40203

40203

ZIP 40203 is in Louisville, Kentucky, in Jefferson County; area code 502; Eastern time. Louisville has 66 ZIP codes in all.

Type
Standard
Time zone
America/Kentucky/Louisville
County
Jefferson
Population
17,742
Coordinates
38.2522, -85.7652
☼ Live from 40203 — Louisville, KY

Weather right now

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Where 40203 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 40203
  • 🔢 Type 40203 into a pocket calculator and turn it upside down: EOZOh — not quite a word, sorry.
  • ➕ As a number, 40,203 = 3 × 3 × 3 × 1489. Its digits add up to 9, a total 375 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 1001110100001011
  • 🏠 Its numerical neighbours: 40202 (Louisville, KY, 1 mi away) and 40204 (Louisville, KY, 2 mi away).
  • 🔄 Backwards, 40203 becomes 30204 — and that is a real ZIP code: Barnesville, GA, 371 miles away.
  • 👥 27 other ZIP codes are made of exactly the same digits (02043, 02304, 02340, 03042, 03240, 04032, …). The farthest-flung twin is 34002 in APO AA, a military post office, 2,060 miles away.
  • 🧭 Farther south than 57% of all ZIP codes, and farther east than 54%.
  • 🎯696 miles east of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 40203 and you would come out at 38.25°S, 94.23°E — 1,294 miles from Perth, Australia, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 50m of daylight. Shortest: 9h 30m.
  • 📏 At 2.9 square miles of land, 40203 is bigger than 14% of ZIP codes — room for about 2.2 Central Parks.
🌙 The sky over 40203 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population17,742This ZIP17,742
Households8,911This ZIP8,911
Housing units10,481This ZIP10,481
Median age32.8This ZIP32.8Kentucky39.1US 38.9
Median household income$30,794This ZIP$30,794Kentucky$63,726US $80,734
Median home value$197,300This ZIP$197,300Kentucky$205,600US $332,700
Median gross rent$809This ZIP$809Kentucky$967US $1,413
Bachelor's degree or higher22.5%This ZIP22.5%
Mean commute19.1 minThis ZIP19.1 min
Population density6,128.5 / sq miThis ZIP6,128.5 / sq mi

Business and tax activity

Business establishments522This ZIP522
Employees8,514This ZIP8,514
Annual payroll$431,402,000This ZIP$431,402,000
Tax returns filed5,880This ZIP5,880
Total adjusted gross income$214,769,000This ZIP$214,769,000

Land area

Land area2.90 sq miThis ZIP2.90 sq mi
Water area0.00 sq mi

Other place names in 40203

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 40203

ZIPCityDistance
40259 Louisville, KY 0.3 mi
40270 Louisville, KY 0.3 mi
40289 Louisville, KY 0.3 mi
40293 Louisville, KY 0.3 mi
40294 Louisville, KY 0.3 mi
40295 Louisville, KY 0.3 mi
40296 Louisville, KY 0.3 mi
40297 Louisville, KY 0.3 mi
40298 Louisville, KY 0.3 mi
40202 Louisville, KY 0.7 mi

Find every ZIP code within 10 miles of 40203 →

Questions about this ZIP code

Where is ZIP code 40203?

40203 is in Louisville, Kentucky, in Jefferson County, part of the Louisville/Jefferson County, KY-IN metropolitan area. Its published point location is 38.2522, -85.7652.

What county is 40203 in?

40203 lies in Jefferson County.

What area code is 40203?

Louisville uses area code 502, from NANPA's telephone records.

What time zone is 40203 in?

40203 uses America/Kentucky/Louisville.

How many people live in 40203?

About 17,742 people live in ZIP code 40203, in 8,911 households, at 6,128.5 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 40203?

$30,794 a year, against $63,726 across Kentucky.

What ZIP codes are near 40203?

The closest are 40259 (0.3 mi), 40270 (0.3 mi), 40289 (0.3 mi), 40293 (0.3 mi) and 40294 (0.3 mi).

Is 40203 a PO Box ZIP code?

40203 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “40203 ZIP Code — Louisville, Kentucky (Jefferson County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/40203

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