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/CT/OLDEST

ZIP Codes With the Oldest Population in Connecticut

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 06061 Pine Meadow Litchfield 74.2
2 06758 Lakeside Litchfield 68.6
3 06456 Middle Haddam Middlesex 65.0
4 06376 South Lyme New London 64.6
5 06444 Marion Hartford 64.2
6 06282 Woodstock Valley Windham 61.6
7 06753 Cornwall Litchfield 61.3
8 06784 Sherman Fairfield 60.2
9 06426 Essex Middlesex 59.5
10 06796 West Cornwall Litchfield 59.5
11 06069 Sharon Litchfield 59.3
12 06793 Washington Litchfield 59.0
13 06378 Stonington New London 58.7
14 06757 Kent Litchfield 58.7
15 06498 Westbrook Middlesex 58.2
16 06475 Old Saybrook Middlesex 57.4
17 06702 Waterbury New Haven 55.9
18 06752 Bridgewater Litchfield 55.9
19 06357 Niantic New London 55.5
20 06759 Litchfield Litchfield 55.2
21 06027 East Hartland Hartford 55.1
22 06255 North Grosvenordale Windham 55.0
23 06783 Roxbury Litchfield 54.7
24 06065 Riverton Hartford 54.2
25 06405 Branford New Haven 54.2
26 06488 Southbury New Haven 54.2
27 06412 Chester Middlesex 54.0
28 06262 Quinebaug Windham 53.9
29 06419 Killingworth Middlesex 53.3
30 06355 Mystic New London 53.2
31 06455 Middlefield Middlesex 52.8
32 06763 Morris Litchfield 52.6
33 06467 Milldale Hartford 52.2
34 06021 Colebrook Litchfield 52.1
35 06081 Tariffville Hartford 52.1
36 06031 Falls Village Litchfield 52.0
37 06371 Old Lyme New London 52.0
38 06896 Redding Fairfield 52.0
39 06443 Madison New Haven 51.8
40 06423 East Haddam Middlesex 51.7
41 06023 East Berlin Hartford 51.5
42 06751 Bethlehem Litchfield 51.5
43 06756 Goshen Litchfield 51.4
44 06798 Woodbury Litchfield 51.4
45 06237 Columbia Tolland 51.3
46 06232 Andover Tolland 51.2
47 06437 Guilford New Haven 51.2
48 06777 New Preston Marble Dale Litchfield 51.2
49 06754 Cornwall Bridge Litchfield 50.9
50 06359 North Stonington New London 50.8

Showing the top 50 of 284 ZIP codes in Connecticut that have this figure . 06061 ranks 1st at 74.2, against 50.8 in 50th place.

Other rankings for Connecticut

Cite this page

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

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