Southington, CT ZIP Codes
Southington, Connecticut has 2 ZIP codes: 2 for street addresses ( and ).
Your street decides which one you use.
Which Southington ZIP code is my address in?
Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?
Southington ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
Dashed line: Southington town limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and county subdivision limits (2024).
All Southington ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 06479 | street delivery; mail may be addressed to Plantsville Plantsville |
| 06489 | street delivery Southington |
ZIP codes from nearby towns that reach into Southington
- 06444, mailing town Marion, covers 3 percent of Southington
Why your mail may say Southington when you live outside it
Southington ZIP codes also cover Plantsville, so a letter addressed to Southington can go to a home outside the town limits.
The reverse happens too: parts of Southington use 06444, which mails under a neighboring town's name.
A ZIP code does not set your city, school district or tax. Capitol Planning Region property records show which city you are in.
Southington ZIP code questions
What is the main ZIP code for Southington?
06489, the ZIP code of the main Southington post office at 125 Main St.
What county is Southington in?
Capitol Planning Region.
ZIP codes for towns near Southington
More towns near Southington: Naugatuck, Middletown, West Hartford, Hamden, Hartford, East Hartford, Glastonbury, Torrington, New Haven.
Sources and last checked
USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.
Checked October 20, 2026. Sources · How we build our lists · Corrections