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/LARGEST-AREA

Largest ZIP Codes in Connecticut by Land Area

What this measures. Land area of the Census tabulation area, in square miles. Water is excluded. Source: Census Gazetteer, data release 2026-10-12.

# ZIP City County Land area
1 06076 Stafford Springs Tolland 86.58 sq mi
2 06776 New Milford Litchfield 56.23 sq mi
3 06415 Colchester New London 55.97 sq mi
4 06359 North Stonington New London 54.25 sq mi
5 06249 Lebanon New London 54.10 sq mi
6 06371 Old Lyme New London 54.00 sq mi
7 06281 Woodstock Windham 53.89 sq mi
8 06759 Litchfield Litchfield 53.69 sq mi
9 06351 Jewett City New London 52.50 sq mi
10 06069 Sharon Litchfield 52.19 sq mi
11 06058 Norfolk Litchfield 50.36 sq mi
12 06437 Guilford New Haven 47.12 sq mi
13 06259 Pomfret Center Windham 42.73 sq mi
14 06790 Torrington Litchfield 41.50 sq mi
15 06331 Canterbury Windham 40.77 sq mi
16 06457 Middletown Middlesex 40.69 sq mi
17 06084 Tolland Tolland 40.07 sq mi
18 06492 Wallingford New Haven 39.78 sq mi
19 06278 Ashford Windham 39.56 sq mi
20 06424 East Hampton Middlesex 39.21 sq mi
21 06488 Southbury New Haven 39.03 sq mi
22 06031 Falls Village Litchfield 38.95 sq mi
23 06238 Coventry Tolland 37.57 sq mi
24 06384 Voluntown New London 37.51 sq mi
25 06470 Newtown Fairfield 37.21 sq mi
26 06057 New Hartford Litchfield 36.79 sq mi
27 06033 Glastonbury Hartford 36.74 sq mi
28 06756 Goshen Litchfield 36.67 sq mi
29 06423 East Haddam Middlesex 36.57 sq mi
30 06798 Woodbury Litchfield 36.36 sq mi
31 06443 Madison New Haven 36.17 sq mi
32 06419 Killingworth Middlesex 35.33 sq mi
33 06877 Ridgefield Fairfield 34.59 sq mi
34 06063 Barkhamsted Litchfield 34.32 sq mi
35 06247 Hampton Windham 33.37 sq mi
36 06082 Enfield Hartford 33.32 sq mi
37 06279 Willington Tolland 33.29 sq mi
38 06478 Oxford New Haven 32.73 sq mi
39 06029 Ellington Tolland 32.70 sq mi
40 06796 West Cornwall Litchfield 32.25 sq mi
41 06410 Cheshire New Haven 32.25 sq mi
42 06021 Colebrook Litchfield 31.55 sq mi
43 06896 Redding Fairfield 31.38 sq mi
44 06791 Harwinton Litchfield 30.87 sq mi
45 06098 Winsted Litchfield 30.71 sq mi
46 06234 Brooklyn Windham 30.65 sq mi
47 06484 Shelton Fairfield 30.63 sq mi
48 06365 Preston New London 30.39 sq mi
49 06757 Kent Litchfield 30.30 sq mi
50 06754 Cornwall Bridge Litchfield 30.14 sq mi

Showing the top 50 of 288 ZIP codes in Connecticut that have this figure and meet the threshold above. 06076 ranks 1st at 86.58 sq mi, against 30.14 sq mi in 50th place.

Other rankings for Connecticut

Cite this page

zipcodes.pro. “Largest ZIP Codes in Connecticut by Land Area.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/rankings/ct/largest-area

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