Ancestry

Top counties by population: Irish

Counties and county equivalents with the largest allocated community estimates.

How to read this list: These are population-weighted ZIP allocation estimates; decimal values are expected. Rankings are among counties and county equivalents published for this community.
Top 100
Standard competition ranking; ties share a rank.
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RankPlaceEstimated communityLocal representationEligible universe
#1Cook County, 17 433,169.48.3715% #1 of 3,144
#2Maricopa County, 04 393,914.68.7773% #2 of 3,144
#3Los Angeles County, 06 370,406.23.7750% #3 of 3,144
#4Middlesex County, 25 300,358.018.3629% #4 of 3,144
#5San Diego County, 06 259,963.17.8218% #5 of 3,144
#6Suffolk County, 36 248,476.517.0037% #6 of 3,144
#7Allegheny County, 42 209,295.116.8679% #7 of 3,144
#8King County, 53 196,201.88.6035% #8 of 3,144
#9Harris County, 48 194,035.14.0528% #9 of 3,144
#10Orange County, 06 186,788.25.9879% #10 of 3,144
#11Norfolk County, 25 175,380.623.9476% #11 of 3,144
#12Montgomery County, 42 165,017.219.0693% #12 of 3,144
#13Nassau County, 36 159,006.211.5246% #13 of 3,144
#14Clark County, 32 158,912.66.8236% #14 of 3,144
#15Essex County, 25 152,271.618.7195% #15 of 3,144
#16Philadelphia County, 42 150,994.19.5883% #16 of 3,144
#17Erie County, 36 148,652.515.7781% #17 of 3,144
#18Worcester County, 25 148,474.717.0651% #18 of 3,144
#19Plymouth County, 25 147,282.427.5653% #19 of 3,144
#20Cuyahoga County, 39 145,658.511.7074% #20 of 3,144
#21Franklin County, 39 145,077.211.2678% #21 of 3,144
#22Bucks County, 42 143,537.421.8840% #22 of 3,144
#23Tarrant County, 48 136,132.56.5075% #23 of 3,144
#24Hennepin County, 27 134,682.310.5761% #24 of 3,144
#25Oakland County, 26 133,414.310.5370% #25 of 3,144
#26Riverside County, 06 131,826.15.2837% #26 of 3,144
#27Capitol Planning Region, 09 127,368.713.0708% #27 of 3,144
#28Delaware County, 42 125,355.521.7361% #28 of 3,144
#29Monmouth County, 34 123,493.319.2237% #29 of 3,144
#30DuPage County, 17 122,396.512.9560% #30 of 3,144
#31St. Louis County, 29 121,150.612.2238% #31 of 3,144
#32Palm Beach County, 12 117,493.47.7439% #32 of 3,144
#33Pinellas County, 12 117,351.912.1774% #33 of 3,144
#34Travis County, 48 117,234.88.4365% #34 of 3,144
#35Dallas County, 48 116,323.04.4290% #35 of 3,144
#36New York County, 36 115,480.67.1195% #36 of 3,144
#37Chester County, 42 115,287.820.9896% #37 of 3,144
#38Hillsborough, 12 114,298.27.4309% #38 of 3,144
#39Wayne County, 26 114,115.76.5626% #39 of 3,144
#40Fairfax County, 51 109,357.19.4591% #40 of 3,144
#41Ocean County, 34 109,206.817.0412% #41 of 3,144
#42Sacramento County, 06 108,412.36.8373% #42 of 3,144
#43Westchester County, 36 107,583.910.7651% #43 of 3,144
#44Monroe County, 36 106,743.814.2083% #44 of 3,144
#45Kings County, 36 105,153.13.9959% #45 of 3,144
#46Bexar County, 48 102,304.95.0036% #46 of 3,144
#47Wake County, 37 100,695.99.1837% #47 of 3,144
#48Hamilton County, 39 99,960.312.0566% #48 of 3,144
#49Suffolk County, 25 97,769.812.4802% #49 of 3,144
#50Bristol County, 25 97,604.416.7605% #50 of 3,144
#51Pima County, 04 96,611.39.2353% #51 of 3,144
#52Broward County, 12 95,2174.8159% #52 of 3,144
#53San Bernardino County, 06 95,082.34.3920% #53 of 3,144
#54Pierce County, 53 95,044.810.1991% #54 of 3,144
#55Bergen County, 34 94,438.19.8137% #55 of 3,144
#56Multnomah County, 41 93,501.311.3850% #56 of 3,144
#57Jefferson County, 21 91,916.711.9570% #57 of 3,144
#58Baltimore County, 24 90,354.910.3204% #58 of 3,144
#59Will County, 17 89,280.612.9024% #59 of 3,144
#60Santa Clara County, 06 89,083.44.5440% #60 of 3,144
#61Contra Costa County, 06 88,091.27.2866% #61 of 3,144
#62Mecklenburg County, 37 87,711.17.5988% #62 of 3,144
#63Morris County, 34 87,478.316.8538% #63 of 3,144
#64Orange County, 12 87,063.45.9412% #64 of 3,144
#65Collin County, 48 86,984.37.4831% #65 of 3,144
#66Johnson County, 20 86,724.014.0044% #66 of 3,144
#67Duval County, 12 85,980.98.4659% #67 of 3,144
#68Burlington County, 34 85,860.817.6969% #68 of 3,144
#69New Castle County, 10 85,695.814.7574% #69 of 3,144
#70Lee County, 12 85,226.210.7955% #70 of 3,144
#71Queens County, 36 84,723.13.6652% #71 of 3,144
#72Alameda County, 06 84,629.35.2436% #72 of 3,144
#73Hillsborough, 33 84,471.619.8671% #73 of 3,144
#74Camden County, 34 84,420.115.9731% #74 of 3,144
#75Western Connecticut Planning Region, 09 84,286.313.4447% #75 of 3,144
#76Macomb County, 26 84,037.99.5372% #76 of 3,144
#77Onondaga County, 36 82,766.517.6861% #77 of 3,144
#78Brevard County, 12 82,753.213.0859% #78 of 3,144
#79El Paso County, 08 82,607.711.2715% #79 of 3,144
#80Providence County, 44 81,676.612.2875% #80 of 3,144
#81Montgomery County, 24 81,384.47.5861% #81 of 3,144
#82Denton County, 48 81,182.08.3597% #82 of 3,144
#83South Central Connecticut Planning Region, 09 80,726.614.1623% #83 of 3,144
#84Rockingham County, 33 79,083.324.7057% #84 of 3,144
#85Denver County, 08 78,730.411.3385% #85 of 3,144
#86Snohomish County, 53 78,086.49.1857% #86 of 3,144
#87Anne Arundel County, 24 77,915.012.9094% #87 of 3,144
#88Salt Lake County, 49 76,292.46.4111% #88 of 3,144
#89Douglas County, 31 76,236.813.2327% #89 of 3,144
#90Marion County, 18 76,133.87.8858% #90 of 3,144
#91Jefferson County, 08 75,368.013.2630% #91 of 3,144
#92Dane County, 55 74,936.713.0181% #92 of 3,144
#93Gloucester County, 34 72,759.823.6570% #93 of 3,144
#94Jackson County, 29 72,688.810.0962% #94 of 3,144
#95Summit County, 39 71,826.313.2679% #95 of 3,144
#96Lake County, 17 71,316.19.9461% #96 of 3,144
#97Spokane County, 53 70,950.412.9132% #97 of 3,144
#98Milwaukee County, 55 70,676.07.6337% #98 of 3,144
#99Middlesex County, 34 69,443.07.9053% #99 of 3,144
#100Ventura County, 06 67,538.77.7703% #100 of 3,144

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