Churches in Nassau County
Nassau County, New York has 565 churches in the Churches List directory, 5 of them verified and 184 with a published website. The 2020 US Religion Census counted 755 congregations and 899,299 adherents across 86 religious bodies in the county. That is 644 adherents per 1,000 residents of its 1,395,767 people.
Religious bodies in Nassau County (2020 US Religion Census)
| Religious body | Congregations | Adherents | Per 1,000 pop. |
|---|---|---|---|
| Catholic Church | 77 | 633,264 | 453.7 |
| Muslim Estimate | 14 | 48,336 | 34.6 |
| Orthodox Judaism | 45 | 40,000 | 28.7 |
| Non-denominational Christian Churches | 62 | 24,010 | 17.2 |
| Conservative Judaism | 26 | 19,707 | 14.1 |
| Reform Judaism | 19 | 15,692 | 11.2 |
| Evangelical Lutheran Church in America | 36 | 12,262 | 8.8 |
| Greek Orthodox Archdiocese of America | 7 | 10,380 | 7.4 |
| United Methodist Church | 37 | 9,480 | 6.8 |
| Episcopal Church | 34 | 9,312 | 6.7 |
| National Baptist Convention, USA, Inc. | 13 | 8,664 | 6.2 |
| Jehovah's Witnesses | 36 | 8,050 | 5.8 |
Source: 2020 US Religion Census (Association of Statisticians of American Religious Bodies). Per-1,000 rates divide reported adherents by the county's 2020 Census population (1,395,767). Largest 12 bodies by adherents shown.
Historic-register churches in the county
- Saint George's Episcopal Church — National Register, 1973
- First Presbyterian Church — National Register, 1976
- Trinity Episcopal Church — National Register, 1986
- Saint Lukes Episcopal Church — National Register, 1988
- Saint Mary's Church — National Register, 2005
- Manhasset Friends Meeting — National Register, 2009
- Church of Our Lady of Kazan Rectory — National Register, 2016
- Christ Church Oyster Bay — National Register, 2018
Notable churches in Nassau County
Valley Stream Presbyterian Church "The Village of Unlimited Love"
All Saints Episcopal Church
Iglesia Adventista del Séptimo Día - Westbury Hispanic
№ 04
Iglesia Cristiana Unida
somos una iglesia de cielos abiertos y trabajamos para el Reino de Dios.
Second Baptist Church
Carpenter Memorial United Methodist Church
Triumphant Agape House
Pastor Rev. George H. Wade Co-pastor Rev. Louise Wade Schedule of Services SUNDAY 11:00am ; 12:45pm: Sunday School 12:45pm: Worship & Praise Service MONDAY 6:00am ; 7:00am: Morning...
Progressive Holiness Church
Christ's First Presbyterian Church
Covenant Church
St. Vincent de Paul Society
Saint Paul's Church
Cities and towns in Nassau County
Directory traditions here: Catholic (97) · Non-Denominational (65) · Lutheran (46) · Baptist Churches (44) · Episcopal (40) · Methodist (30) · Presbyterian (30) · United Methodist (24) · Seventh Day Adventist (24) · United Church of Christ (17)
Researching ancestors from Nassau County?
Church registers are among the richest genealogical sources: baptisms, marriages, and burials often predate civil records. The FamilySearch catalog holds microfilmed church records for many New York counties, filed by denomination and parish name: search Nassau County church records on FamilySearch (free account). Cross-reference with the historic-register churches above and the cemeteries listed on each church's page.
Disaster history of Nassau County
FEMA has issued 31 disaster declarations covering Nassau County since records began in 1953, most recently in 2024. The most frequent cause: hurricane (12 declarations). Churches have historically served as shelters and relief hubs in these events; congregations can register preparedness plans with their county emergency management agency.
Source: OpenFEMA Disaster Declarations Summaries.
How this county page is assembled
Directory listings are mapped to Nassau County through the US Census Bureau's 2020 ZCTA-to-county relationship file: each ZIP Code Tabulation Area is assigned to the county holding the largest share of its land area, so a small number of churches in ZIP codes that straddle county lines may be attributed to a neighboring county. Congregation and adherent counts come from the 2020 US Religion Census and are reported by the religious bodies themselves. Population is the county's April 2020 decennial-census base from the US Census Bureau's population-estimates program; per-1,000 adherence rates divide reported adherents by that figure. Corrections to any listing go through the corrections page.