Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — RANKINGS/KY/OLDEST

ZIP Codes With the Oldest Population in Kentucky

What this measures. Median age of residents, ACS 5-year estimate. Source: Census American Community Survey, data release 2026-10-12.

# ZIP City County Median age
1 40049 Nerinx Marion 87.4
2 40058 Port Royal Henry 87.1
3 40041 Masonic Home Jefferson 82.0
4 40849 Lejunior Harlan 79.9
5 42153 Holland Allen 77.3
6 40376 Slade Powell 75.3
7 40820 Cranks Harlan 70.7
8 41619 Drift Floyd 70.7
9 41559 Regina Pike 69.1
10 41845 Premium Letcher 68.8
11 40921 Bryants Store Knox 67.9
12 41643 Lackey Knott 67.2
13 40819 Coldiron Harlan 66.1
14 41250 Pilgrim Martin 65.0
15 41861 Raven Knott 64.8
16 40983 Sextons Creek Owsley 64.2
17 41607 Blue River Floyd 63.8
18 41142 Grahn Carter 63.0
19 41232 Lowmansville Lawrence 62.7
20 41762 Sizerock Leslie 62.6
21 41849 Seco Letcher 62.5
22 41812 Deane Letcher 62.4
23 42076 New Concord Calloway 62.2
24 40007 Bethlehem Henry 62.0
25 40941 Garrard Clay 62.0
26 42259 Mammoth Cave Edmonson 62.0
27 42060 Lovelaceville Ballard 61.9
28 41538 Jonancy Pike 61.8
29 40152 Mc Daniels Breckinridge 61.7
30 40171 Union Star Breckinridge 61.6
31 41234 Meally Johnson 61.6
32 41836 Mallie Knott 61.0
33 41566 Steele Pike 60.6
34 40995 Trosper Knox 60.5
35 41819 Gordon Letcher 60.3
36 41729 Combs Perry 60.1
37 40020 Fairfield Nelson 59.9
38 40829 Grays Knob Harlan 59.8
39 41180 Webbville Lawrence 58.6
40 41612 Bypro Floyd 58.5
41 41831 Leburn Knott 58.3
42 42028 Burna Livingston 58.2
43 41621 Dwale Floyd 58.1
44 41397 Zoe Lee 57.5
45 42638 Revelo McCreary 57.3
46 42214 Center Metcalfe 57.1
47 40964 Mary Alice Harlan 56.8
48 41605 Betsy Layne Floyd 56.8
49 42045 Grand Rivers Livingston 56.8
50 41364 Ricetown Owsley 56.5

Showing the top 50 of 749 ZIP codes in Kentucky that have this figure . 40049 ranks 1st at 87.4, against 56.5 in 50th place.

Other rankings for Kentucky

Cite this page

zipcodes.pro. “ZIP Codes With the Oldest Population in Kentucky.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/rankings/ky/oldest

Underlying data is public domain or openly licensed — sources, vintages and licences.