The largest Jewish communities in US.

The largest Jewish communities in USA, based by percentage of total population, were:

County Jewish population % of total Rockland County, New York 90,000 31.4% New York County, New York[37] 314,500 20.5% Falls Church, Virginia 1,800 17.4% Fairfax, Virginia 3,600 16.7% Nassau County, New York 207,000 15.5% Kings County, New York[38] 379,000 15.4% Palm Beach County, Florida 167,000 14.8% Broward County, Florida 213,000 13.1% Queens County, New York 238,000 10.7% Monmouth County, New Jersey 65,000 10.6% Westchester County, New York 94,000 10.2% Sullivan County, New York 7,425 10.0% Essex County, New Jersey 76,200 9.6% Bergen County, New Jersey 83,700 9.5% Montgomery County, Maryland 83,800 9.1% Baltimore, Maryland 56,500 8.7% Fulton County, Georgia 65,900 8.1% Montgomery County, Pennsylvania 59,550 7.9% Middlesex County, Massachusetts 113,700 7.8% Richmond County, New York[39] 33,700 7.6% Marin County, California 18,500 7.5% Camden County, New Jersey 36,000 7.1% Morris County, New Jersey 33,500 7.1% Suffolk County, New York 100,000 7.0% Denver County, Colorado 38,100 6.6% Oakland County, Michigan 77,200 6.5% San Francisco County, California 49,500 6.4% Bronx County, New York 83,700 6.3% Middlesex County, New Jersey 45,000 6.0% Los Angeles County, California 564,700 5.9% Norfolk County, Massachusetts 38,300 5.9% Atlantic County, New Jersey 14,600 5.8% Bucks County, Pennsylvania 34,800 5.8% Union County, New Jersey 30,100 5.8% Cuyahoga County, Ohio 79,000 5.7% Philadelphia County, Pennsylvania 86,600 5.7% Clark County, Nevada 75,000 5.5% Miami-Dade County, Florida 124,000 5.5% Baltimore County, Maryland 38,000 5.0% Pitkin County, Colorado 750 5.0% Plymouth County, Massachusetts 23,600 5.0% St. Louis County, Missouri 47,100 4.6% Boulder County, Colorado 13,200 4.5% Washington, District of Columbia 25,500 4.5% Cook County, Illinois 234,400 4.4% Fairfield County, Connecticut 38,800 4.4% Orange County, New York 15,000 4.4% Alexandria, Virginia 5,400 4.2% Albany County, New York 12,000 4.1% Alpine County, California 50 4.1% Sarasota County, Florida 13,500 4.1%

County Jewish population % of total Howard County, Maryland 10,000 4.0% Lake County, Illinois 25,000 3.9% Portsmouth, Virginia 3,800 3.8% Somerset County, New Jersey 11,100 3.7% West Baton Rouge Parish, Louisiana 800 3.7% Rockdale County, Georgia 2,500 3.6% Suffolk County, Massachusetts 24,700 3.6% Bristol County, Rhode Island 1,760 3.5% Custer County, Idaho 150 3.5% Hartford County, Connecticut 30,000 3.5% New Haven County, Connecticut 28,900 3.5% Passaic County, New Jersey 17,000 3.5% San Mateo County, California 24,500 3.5% Schenectady County, New York 5,200 3.5% Ulster County, New York 5,900 3.3% Norfolk, Virginia 7,600 3.2% Santa Clara County, California 54,000 3.2% Burlington County, New Jersey 13,000 3.1% Monroe County, New York 22,500 3.1% Essex County, Massachusetts 21,700 3.0% Berkshire County, Massachusetts 3,900 2.9% Delaware County, Pennsylvania 15,700 2.9% Monroe County, Michigan 4,200 2.9% Multnomah County, Oregon 19,300 2.9% Hennepin County, Minnesota 31,600 2.8% Sussex County, New Jersey 4,100 2.8% Allegheny County, Pennsylvania 34,600 2.7% Fayette County, Georgia 2,500 2.7% Hamilton County, Ohio 22,500 2.7% Johnson County, Kansas 12,000 2.7% Mercer County, New Jersey 9,100 2.6% Nantucket County, Massachusetts 250 2.6% Ozaukee County, Wisconsin 2,100 2.6% Pinellas County, Florida 24,200 2.6% Prince George's County, Maryland 20,700 2.6% Worcester County, Massachusetts 19,500 2.6% San Diego County, California 70,000 2.5% Milwaukee County, Wisconsin 22,900 2.5% Pima County, Arizona 20,000 2.4% Alameda County, California 32,500 2.3% Chester County, Pennsylvania 10,100 2.3% Contra Costa County, California 22,000 2.3% Cumberland County, Maine 6,000 2.3% Hampden County, Massachusetts 10,600 2.3% Ocean County, New Jersey 11,500 2.3% Santa Cruz County, California 6,000 2.3% Bristol County, Massachusetts 11,600 2.2% Clay County, Georgia 75 2.2% Washtenaw County, Michigan 7,000 2.2%