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County · code 09001

Fairfield CountyConnecticut

Fairfield County is a county in Connecticut with its seat in Bridgeport, formed in 1666.

  • Founded1666
  • County seatBridgeport
  • Land area625 sq mi + 212 sq mi water
  • Population957,419 2020 Census
  • Parcels mapped298,792 checked 15 October 2026
Open the free map Click any parcel in Fairfield County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

Westchester, NYPutnam, NYNew HavenNassau, NYLitchfieldDutchess, NYSuffolk, NY Bridgeport Census outline · seat marked

Where it is

Fairfield on the map of Connecticut

Connecticut has 8 counties and county equivalents, each with its own records office. Shapes with a page are links.

Hartford CountyLitchfield CountyMiddlesex CountyNew Haven CountyNew London CountyTolland CountyWindham CountyFairfield County Fairfield
Counties of Connecticut · Fairfield highlighted

History

Founded in 1666

An old deed may name a county that no longer exists, or a boundary that has since moved.

Fairfield County was formed in 1666. Bridgeport is the county seat.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries; the 5 that matter most are shown first.

  1. 1666
    Fairfield County created Fairfield created by the Colony of Connecticut as one of four original counties; part of its western limit was not clearly defined, but included part of New York (town of Rye). · Conn. Col. Recs., 2:34-35
  2. 1675
    Gained territory Fairfield gained town of Woodbury from Non-County Area 2. · Conn. Col. Recs., 2:253
  3. 1683
    Lost territory Fairfield lost to Westchester (New York) when the provincial boundary between Connecticut and New York was adjusted, and the town of Rye reverted to New York.
    to Westchester (N.Y.)
    · Bowen, Disputes, 73-74; Van Zandt, 72-73
  4. 1687
    Gained territory Fairfield gained town of Danbury from Non-County Area 2. · Conn. Col. Recs., 3:240
  5. 1709
    Gained territory Fairfield gained town of Ridgefield from Non-County Area 2. · Conn. Col. Recs., 5:120-122
Show all 12 changes (7 more)
  1. 1666
    Fairfield County created Fairfield created by the Colony of Connecticut as one of four original counties; part of its western limit was not clearly defined, but included part of New York (town of Rye). · Conn. Col. Recs., 2:34-35
  2. 1675
    Gained territory Fairfield gained town of Woodbury from Non-County Area 2. · Conn. Col. Recs., 2:253
  3. 1683
    Lost territory Fairfield lost to Westchester (New York) when the provincial boundary between Connecticut and New York was adjusted, and the town of Rye reverted to New York.
    to Westchester (N.Y.)
    · Bowen, Disputes, 73-74; Van Zandt, 72-73
  4. 1687
    Gained territory Fairfield gained town of Danbury from Non-County Area 2. · Conn. Col. Recs., 3:240
  5. 1709
    Gained territory Fairfield gained town of Ridgefield from Non-County Area 2. · Conn. Col. Recs., 5:120-122
  6. 1714
    Gained territory Fairfield gained town of Newtown from Non-County Area 6; Non-County Area 6 eliminated. · Conn. Col. Recs., 5:469-470
  7. 1728
    Gained territory Fairfield gained town of New Fairfield from Non-County Area 2; Non-County Area 2 eliminated. · Conn. Col. Recs., 7:214
  8. 1751
    Lost territory Fairfield lost to creation of Litchfield.
    to Litchfield
    · Conn. Col. Recs., 10:56-58
  9. 1754
    Gained territory Fairfield gained small area from Litchfield.
    from Litchfield
    · Conn. Col. Recs., 10:274-275
  10. 1788
    Gained territory Fairfield gained from Litchfield when town of Brookfield was created from towns of Danbury, Newtown, and New Milford.
    from Litchfield
    · Conn. St. Recs., 6:410
  11. 1796
    Boundary clarified Fairfield boundaries were redefined (no change).
    no change
    · Conn. Pub. Acts 1796, pp. 123-124
  12. 1881
    Boundary clarified Fairfield jurisdiction over the waters of Long Island Sound was redefined, in accordance with the redefinition of the state line that took effect 26 February 1881 (no change).
    no change
    · Conn. Pub. Acts 1881, ch. 37, sec. 1/p. 19

Land and parcels

What the maps cover in Fairfield

Who publishes each layer, how good it is, and when we last checked.

Official
from the office that keeps the record
Good enough
a reliable statewide or national copy
Fallback
a guide only; check the official record
Missing
nothing public found yet

People and land

Fairfield by the Census

Population
957,419 2020 Census count
Housing units
378,479 2020 Census count
Land area
625 square miles
Water area
212 square miles
People per sq mi
1,532 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

See your own lot on these maps

Open Fairfield County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.

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Questions

Common questions about Fairfield County

When was Fairfield County founded?
Fairfield County was founded in 1666.
What is the county seat of Fairfield County?
The county seat of Fairfield County is Bridgeport.
Is there an online parcel map for Fairfield County?
Yes. A public source publishes a parcel map of 298,792 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Fairfield County's boundary or name changed?
Fairfield County was created in 1666. Since then the Atlas of Historical County Boundaries records 9 later changes, chiefly involving Litchfield County and Westchester (N.Y.) County.
Is my lot in a flood zone?
We do not have flood maps for Fairfield County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby

Counties next door