County ZIP codes · Connecticut · FIPS 09001
Fairfield County, CT ZIP Codes
Fairfield County, Connecticut has 83 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 46 residential and 37 for PO boxes or a single organization. 1 of the residential ones extends into a neighboring county. Median household income ranges from $45,754 in 06608 (Bridgeport) to $250,000 or more in 7 ZIP codes at the Census top code (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of Fairfield County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $93,675 and $159,828. 7 report $250,000 or more, the Census top code.
They carry 28 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 46 residential ZIP codes in Fairfield County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 06902 | Stamford | 73,392 | 7,317 | $95k | $510k | 100% |
| 06810 | Danbury | 55,833 | 2,670 | $77k | $402k | 100% |
| 06606 | Bridgeport | 49,308 | 9,335 | $73k | $289k | 100% |
| 06484 | Shelton | 41,889 | 1,368 | $108k | $453k | 100% |
| 06611 | Trumbull | 37,281 | 1,598 | $163k | $547k | 100% |
| 06824 | Fairfield | 36,716 | 1,828 | $193k | $869k | 100% |
| 06614 | Stratford | 35,654 | 3,219 | $111k | $375k | 100% |
| 06854 | Norwalk | 32,118 | 6,679 | $87k | $461k | 100% |
| 06604 | Bridgeport | 31,771 | 10,070 | $50k | $267k | 100% |
| 06811 | Danbury | 31,228 | 1,487 | $105k | $421k | 100% |
| 06851 | Norwalk | 27,865 | 3,625 | $111k | $587k | 100% |
| 06880 | Westport | 27,583 | 1,378 | $250k+ | $1.4M | 100% |
| 06605 | Bridgeport | 25,929 | 11,343 | $56k | $336k | 100% |
| 06877 | Ridgefield | 25,110 | 726 | $179k | $836k | 100% |
| 06830 | Greenwich | 24,880 | 1,838 | $147k | $1.66M | 100% |
| 06610 | Bridgeport | 22,020 | 7,152 | $52k | $228k | 100% |
| 06825 | Fairfield | 21,982 | 3,235 | $136k | $631k | 100% |
| 06820 | Darien | 21,936 | 1,734 | $250k+ | $1.82M | 100% |
| 06840 | New Canaan | 20,870 | 941 | $250k+ | $1.61M | 100% |
| 06801 | Bethel | 20,796 | 1,229 | $117k | $435k | 100% |
| 06905 | Stamford | 20,725 | 4,087 | $137k | $618k | 100% |
| 06850 | Norwalk | 19,692 | 2,904 | $124k | $581k | 100% |
| 06468 | Monroe | 18,949 | 727 | $157k | $503k | 100% |
| 06897 | Wilton | 18,777 | 701 | $242k | $929k | 100% |
| 06804 | Brookfield | 17,908 | 897 | $149k | $480k | 100% |
| 06615 | Stratford | 17,136 | 2,683 | $82k | $365k | 100% |
| 06470 | Newtown | 15,593 | 419 | $153k | $578k | 100% |
| 06831 | Greenwich | 15,210 | 552 | $227k | $1.7M | 100% |
| 06903 | Stamford | 14,010 | 805 | $204k | $911k | 100% |
| 06812 | New Fairfield | 13,584 | 665 | $138k | $485k | 100% |
| 06608 | Bridgeport | 12,146 | 11,815 | $46k | $236k | 100% |
| 06482 | Sandy Hook | 12,000 | 593 | $160k | $499k | 100% |
| 06901 | Stamford | 11,037 | 21,684 | $103k | $479k | 100% |
| 06883 | Weston | 10,396 | 526 | $250k+ | $997k | 100% |
| 06855 | Norwalk | 9,351 | 3,786 | $106k | $511k | 100% |
| 06906 | Stamford | 9,199 | 6,819 | $94k | $597k | 100% |
| 06896 | Redding | 8,779 | 280 | $186k | $706k | 100% |
| 06907 | Stamford | 8,705 | 4,448 | $106k | $590k | 100% |
| 06878 | Riverside | 8,328 | 3,444 | $250k+ | $1.97M | 100% |
| 06607 | Bridgeport | 7,979 | 6,902 | $50k | $233k | 100% |
| 06870 | Old Greenwich | 7,864 | 3,469 | $250k+ | $1.79M | 100% |
| 06612 | Easton | 7,670 | 280 | $223k | $783k | 100% |
| 06807 | Cos Cob | 7,650 | 2,336 | $192k | $1.44M | 100% |
| 06890 | Southport | 4,653 | 1,607 | $219k | $1.21M | 100% |
| 06784 | Sherman | 3,583 | 163 | $117k | $493k | 97% |
| 06853 | Norwalk | 3,171 | 2,629 | $250k+ | $1.61M | 100% |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by residents (simplemaps county weights; Connecticut keeps its historical counties).
Which ZIP codes cross the county line?
1 ZIP code of Fairfield County extends into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In Fairfield | Elsewhere |
|---|---|---|
| 06784 | 97% | Litchfield County3% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (Connecticut: simplemaps county weights by residents).
PO Box and single-organization ZIP codes
| ZIP | Postal name |
|---|---|
| 06404 | Botsford |
| 06440 | Hawleyville |
| 06491 | Stevenson |
| 06601 | Bridgeport |
| 06602 | Bridgeport |
| 06673 | Bridgeport |
| 06699 | Bridgeport |
| 06813 | Danbury |
| 06814 | Danbury |
| 06816 | Danbury |
| 06817 | Danbury |
| 06828 | Fairfield |
| 06829 | Georgetown |
| 06836 | Greenwich |
| 06838 | Greens Farms |
| 06852 | Norwalk |
| 06856 | Norwalk |
| 06857 | Norwalk |
| 06858 | Norwalk |
| 06860 | Norwalk |
| 06875 | Redding Center |
| 06876 | Redding Ridge |
| 06879 | Ridgefield |
| 06881 | Westport |
| 06888 | Westport |
| 06889 | Westport |
| 06904 | Stamford |
| 06910 | Stamford |
| 06911 | Stamford |
| 06912 | Stamford |
| 06913 | Stamford |
| 06914 | Stamford |
| 06920 | Stamford |
| 06921 | Stamford |
| 06922 | Stamford |
| 06926 | Stamford |
| 06927 | Stamford |
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do Fairfield County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Fairfield County's ZIP codes use 5 prefixes: 064, 066, 067, 068 and 069.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 064 | Hartford, CT (SCF 060) | 7 | 64 |
| 066 | Westchester, NY (SCF 105) | 14 | 14 |
| 067 | Hartford, CT (SCF 060) | 1 | 50 |
| 068 | Westchester, NY (SCF 105) | 44 | 44 |
| 069 | Westchester, NY (SCF 105) | 17 | 17 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.