Nassau
NY flag

Nassau

County

Territory

  • officials recorded 16
  • partly recorded 50
  • nothing recorded 67
GEOID
36059
OCD-ID
ocd-division/country:us/state:ny/county:nassau
POP
1,398,939 (2025)
CENTER
40.7321, -73.5856
SOURCE
census tiger

Government of Nassau

Bodies, seats, agencies and services that belong to Nassau itself. Jurisdictions inside it are listed separately below.

Organization 9

Departments

  • Office of the Nassau County Clerk, responsible for recording and maintaining legal documents, issuing licenses, and serving as clerk of the county courts.

  • Nassau County Department of Health, providing public health services including disease prevention, environmental health, emergency preparedness, and community health programs.

  • Nassau County Department of Public Works, responsible for road maintenance, traffic engineering, mosquito control, and county infrastructure.

  • Nassau County Department of Social Services, providing public assistance, child welfare, adult protective services, and other social safety net programs.

  • Office of the Nassau County District Attorney, responsible for the prosecution of crimes committed in Nassau County.

  • Office of the Nassau County Executive, the chief administrator of county government responsible for law enforcement, planning, consumer protection, roads, parks and recreation, and preparation of the county budget.

  • The legislative branch of Nassau County government, consisting of 19 members representing individual districts, responsible for enacting local laws, approving the county budget, and providing oversight of county operations.

  • Primary law enforcement agency for Nassau County, providing police services to unincorporated areas and villages that contract for police services.

  • Nassau County Sheriff's Office responsible for corrections, civil enforcement, courthouse security, and prisoner transport.

Within Nassau

Each of these governs itself. Counts are that jurisdiction's own records.

jurisdictions
133
agencies
248
bodies
88
officials
168
Name Agencies Bodies Officials
Hempstead 2 1 0
Freeport 2 1 0
Valley Stream 6 1 4
Long Beach 9 1 5
Glen Cove 1 1 7
Rockville Centre 7 1 5
Garden City 7 1 8
Mineola 7 1 5
Lynbrook 7 1 5
Massapequa Park 7 0 0
Floral Park 10 4 22
Westbury 7 3 19
Great Neck 1 3 0
New Hyde Park 4 2 0
East Rockaway 7 1 0
Farmingdale 5 2 0
Malverne 2 1 0
Great Neck Plaza 4 0 0
Williston Park 5 2 0
Cedarhurst 1 1 0
East Hills 1 1 0
Manorhaven 2 0 0
Lawrence 5 0 0
Bayville 3 0 0
Kings Point 2 0 0
North Hills 1 3 0
Old Westbury 6 1 0
Island Park 2 0 0
Sea Cliff 5 2 0
Flower Hill 3 2 0
Muttontown 2 0 0
Port Washington North 3 0 0
Great Neck Estates 6 1 0
Brookville 3 3 0
Roslyn 4 1 0
Lake Success 1 0 0
Munsey Park 5 3 14
Thomaston 2 0 0
Sands Point 2 0 0
East Williston 5 1 0
Oyster Bay Cove 7 3 0
Old Brookville 1 2 0
Laurel Hollow 2 0 0
Stewart Manor 6 0 0
Lattingtown 4 3 17
Upper Brookville 2 4 0
South Floral Park 4 1 5
Atlantic Beach 5 1 0
Plandome 2 0 0
Roslyn Estates 6 3 0

Showing the 50 largest of 133. Totals include all of them.