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 — CITY/CT/MASHANTUCKET

Mashantucket ZIP code, Connecticut

The ZIP code for Mashantucket, CT is 06338, and its area codes are 860 and 959.

USPS city name
1 ZIP code
Overlapping the city
2 more
Population
86
Area codes
860, 959

NANPA lists no telephone rate centre for Mashantucket itself, so these are the area codes of the nearest one, Ledyard (1.8 miles). A town on an area-code boundary can differ from its neighbour.

Mail addressed to Mashantucket uses the ZIP code above. 2 more ZIP codes cover part of the city but are addressed as somewhere else; they are listed separately below.

ZIP codes addressed as Mashantucket

ZIP codes with the USPS city name Mashantucket
ZIP City Type Population Median income Median home
06338 Mashantucket , CT Standard 27 $137,500 $433,300

Other ZIP codes overlapping Mashantucket

These ZIP codes cover part of Mashantucket but are addressed as somewhere else.

ZIP codes overlapping Mashantucket
ZIP City Type Population Median income Median home
06339 Ledyard , CT Standard 9,113 $106,403 $330,500
06365 Preston , CT Standard 4,807 $117,045 $361,400

Map of Mashantucket ZIP codes

06338

The ZIP codes of Mashantucket, CT, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Mashantucket

The nearest larger towns are Old Mystic (3,340 people, 5.6 mi), Gales Ferry (1,141 people, 6.4 mi) and Conning Towers-Nautilus Park (8,460 people, 6.9 mi).

Towns near Mashantucket
TownPopulationDistance
Old Mystic 3,340 5.6 mi
Conning Towers-Nautilus Park 8,460 6.9 mi
Mystic 4,483 7.6 mi
Oxoboxo River 2,782 8.0 mi
Norwich 39,973 8.3 mi
Pawcatuck 5,577 8.8 mi
Long Hill 4,399 8.9 mi
Jewett City 3,429 9.9 mi
Westerly, RI 18,411 10.7 mi
Groton 9,490 10.8 mi
New London 27,625 11.1 mi
Waterford 3,304 11.4 mi
Niantic 3,123 15.5 mi
Moosup 2,885 18.2 mi

More nearby: every ZIP code in New London County · Connecticut ZIP codes

Cite this page

zipcodes.pro. “Mashantucket, CT ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ct/mashantucket

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