Ancestry for Washington County, IA - ERSys®
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Washington County – Ancestry

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Ancestry refers to the lineage or descent of a person, family, or group, tracing back through generations to identify their origins, heritage, and familial connections. It encompasses the genetic, cultural, and historical ties that link individuals to their forebears, shaping their identity and sense of belonging. Ancestry is a multifaceted concept, intertwining biology, genealogy, history, and culture, and it plays a significant role in how people understand themselves and their place in the world.

At its core, ancestry is rooted in genetics. Each individual inherits a unique combination of DNA from their parents, who in turn inherited their DNA from their own ancestors. This genetic material carries information about physical traits, predispositions to certain health conditions, and even behavioral tendencies. Advances in genetic testing, such as DNA analysis, have made it possible for individuals to trace their biological ancestry with remarkable precision. Companies like 23andMe and AncestryDNA offer services that analyze genetic markers to provide insights into a person's ethnic composition and geographic origins, often revealing surprising connections to distant relatives or previously unknown heritage.

Beyond genetics, ancestry is deeply tied to genealogy, the study of family history and lineage. Genealogical research involves constructing family trees, documenting relationships, and uncovering historical records such as birth certificates, marriage licenses, census data, and immigration documents. This process often reveals stories of migration, resilience, and adaptation, offering a window into the lives of ancestors and the challenges they faced. For many, genealogy is a way to honor their forebears and preserve their legacy for future generations.

Cultural ancestry is another critical dimension, encompassing the traditions, languages, customs, and values passed down through generations. It connects individuals to their ethnic or national heritage, shaping their cultural identity and worldview. For example, someone with Irish ancestry might celebrate St. Patrick's Day, learn traditional Irish dance, or explore the Gaelic language, while someone with Japanese ancestry might practice tea ceremonies, study calligraphy, or observe Obon festivals. Cultural ancestry fosters a sense of continuity and belonging, linking individuals to a broader community with shared experiences and values.

Historical ancestry delves into the broader context of a family's or group's past, including significant events, social conditions, and historical movements that shaped their lives. For instance, the transatlantic slave trade, the Irish Potato Famine, or the Jewish diaspora have profoundly influenced the ancestry of millions of people, leaving lasting imprints on their descendants' identities. Understanding historical ancestry often involves grappling with complex narratives of triumph and tragedy, resilience and oppression, and the interplay of individual and collective experiences.

Ancestry also has a deeply personal and emotional dimension. For many, exploring their ancestry is a journey of self-discovery, offering insights into who they are and where they come from. It can foster a sense of pride, connection, and continuity, as well as a deeper appreciation for the struggles and achievements of those who came before. At the same time, it can raise questions about identity, belonging, and the complexities of heritage, particularly for individuals with mixed or multicultural backgrounds.

In a globalized world, ancestry serves as a bridge between the past and the present, connecting individuals to their roots while also highlighting the interconnectedness of human history. It underscores the diversity and richness of human experience, reminding us that every person's story is part of a larger tapestry woven over centuries. Whether through genetic testing, genealogical research, cultural practices, or historical exploration, ancestry offers a profound way to understand ourselves and our place in the world.

A diversification score measures the diversity of ancestries in the county. As the value appoaches 100, ancestry diversity decreases and therefore increasing the risk of a lack of cultural diversity. The ancestry diversification score for this county is:

16.69

Most common ancestry not including "Unknown" is:

German

 
Ancestry Report Part I
DescriptionTotal Population American Native American Hawaiian Caribbean (Latino) Mexican Central American South American Other Hispanic African American Sub- Saharan Caribbean (Black)

Washington County22,6461,240174211,2322030168925113
Iowa (in 000's)3,267138951516129710724015
National (in 000's)343,25113,8902,21362611,32738,8796,1814,6443,68725,8937,8527,174
Johnson County161,8184,160222431,3086,2391,6251,1275865,7575,9631,096
Henry County19,7111,14162112086279317903409574
Iowa County16,72883622144263547972148
Jefferson County15,8621,0643298224741979025634038
Louisa County10,69354690131,5712035942117
Keokuk County9,88870930917324185023
 
Per Cent to Total PopulationDiversity
Index
 

Washington County16.695.480.080.020.095.440.900.000.740.410.230.06
Iowa12.524.230.270.170.464.920.890.220.322.211.240.45
National7.834.050.640.183.3011.331.801.351.077.542.292.09
Johnson County9.662.570.140.030.813.861.000.700.363.563.690.68
Henry County15.385.790.310.061.063.180.470.090.461.720.480.38
Iowa County17.385.000.130.010.022.550.210.020.470.430.080.05
Jefferson County12.076.710.200.060.521.560.031.240.571.612.140.24
Louisa County16.595.110.080.000.1214.690.190.030.550.390.100.07
Keokuk County18.597.170.030.000.091.750.240.010.080.510.020.03
 
Comparisons to State Norms % to Total >= 150% % to Total < 50% 

Washington County 129.4227.7010.6020.21110.65100.290.00235.4618.4118.1912.82
Iowa 100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00
National 95.65237.92109.49719.30230.38201.48602.19340.91341.89184.79466.70
Johnson County 60.7650.6215.94176.1978.42112.35309.99114.94161.24297.68151.24
Henry County 136.82116.0633.48230.0264.7052.7938.39144.9278.1838.9383.83
Iowa County 118.1248.533.595.2151.8023.4110.64149.9019.516.7610.68
Jefferson County 158.5474.4434.04112.6831.672.82552.79180.0973.15173.1653.49
Louisa County 120.6931.060.0026.50298.8220.9312.49175.1317.808.3114.62
Keokuk County 169.4711.190.0019.8435.5927.164.5025.6822.921.636.77
 
Comparisons to National Norms % to Total >= 150% % to Total < 50% 

Washington County 135.3111.649.682.8148.0349.780.0069.075.399.842.75
Iowa 104.5542.0391.3313.9043.4149.6316.6129.3329.2554.1221.43
National 100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00
Johnson County 63.5321.2814.5624.4934.0455.7651.4833.7247.16161.0932.41
Henry County 143.0548.7830.5831.9828.0826.206.3742.5122.8721.0717.96
Iowa County 123.5020.403.280.7222.4811.621.7743.975.713.662.29
Jefferson County 165.7631.2931.0915.6713.751.4091.8052.8321.3993.7011.46
Louisa County 126.1813.050.003.68129.7110.392.0751.375.214.503.13
Keokuk County 177.194.710.002.7615.4513.480.757.536.700.881.45
 
Ancestry Report Part II
DescriptionTotal Population Canadian British Dutch French German Italian Polish Scandi­navian Scotish/ Irish Spanish Other European

Washington County22,646541,3692363655,6421271686392,04272723
Iowa (in 000's)3,2675204733670537211872745100
National (in 000's)343,2511,35018,0691,8283,64224,7089,0274,6675,96920,6251,1409,563
Johnson County161,81845110,2731,5921,56027,8172,5621,6318,08414,0944907,187
Henry County19,711891,2661742284,4422111798351,7047252
Iowa County16,728151,2873282644,9321241156131,72429650
Jefferson County15,862761,3201961831,8392341946701,2150844
Louisa County10,693871174791,59533232048020111
Keokuk County9,888138222001652,52844462539073249
 
Per Cent to Total PopulationDiversity
Index
 

Washington County16.690.246.051.041.6124.910.560.742.829.020.323.19
Iowa12.520.166.242.241.1121.591.140.655.738.390.153.05
National7.830.395.260.531.067.202.631.361.746.010.332.79
Johnson County9.660.286.350.980.9617.191.581.015.008.710.304.44
Henry County15.380.456.420.881.1622.541.070.914.248.640.041.28
Iowa County17.380.097.691.961.5829.480.740.693.6610.310.173.89
Jefferson County12.070.488.321.241.1511.591.481.224.227.660.005.32
Louisa County16.590.076.650.690.7414.920.310.221.917.500.001.04
Keokuk County18.590.138.312.021.6725.570.440.472.569.170.032.52
 
Comparisons to State Norms % to Total >= 150% % to Total < 50% 

Washington County 146.0596.9346.61145.67115.4049.06114.5249.27107.43209.29104.69
Iowa 100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00
National 240.9284.4023.8295.8933.34230.07209.8730.3671.59218.6791.37
Johnson County 170.70101.7944.0087.1379.63138.50155.5987.23103.77199.33145.65
Henry County 276.55102.9839.48104.54104.3993.64140.1873.97103.0023.3841.92
Iowa County 54.92123.3687.69142.64136.5764.85106.1263.99122.79114.12127.42
Jefferson County 293.46133.4355.26104.2753.70129.05188.8073.7691.260.00174.49
Louisa County 45.82106.6130.9566.7769.0927.0033.2033.3189.360.0034.04
Keokuk County 80.52133.2990.46150.82118.4338.9371.8144.68109.2919.9782.58
 
Comparisons to National Norms % to Total >= 150% % to Total < 50% 

Washington County 60.62114.84195.69151.91346.1121.3254.56162.27150.0795.71114.59
Iowa 41.51118.48419.87104.29299.9143.4747.65329.35139.6845.73109.45
National 100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00
Johnson County 70.86120.60184.7490.86238.8160.2074.13287.30144.9591.16159.41
Henry County 114.79122.01165.76109.02313.0740.7066.79243.62143.8710.6945.89
Iowa County 22.80146.16368.19148.75409.5928.1950.56210.74171.5252.19139.47
Jefferson County 121.81158.09232.03108.74161.0656.0989.96242.92127.480.00190.98
Louisa County 19.02126.31129.9569.63207.2211.7315.82109.72124.820.0037.26
Keokuk County 33.42157.92379.80157.28355.1716.9234.22147.15152.669.1390.38
 
Ancestry Report Part III
DescriptionTotal Population Chinese Filipino Japanese Korean Vietnamese South Central Asian South East Asian Other Asian Middle Eastern Other Ancestry Unknown

Washington County22,64646220150032601,6906,366
Iowa (in 000's)3,267126179191688310720
National (in 000's)343,2514,4613,0107931,5411,9135,4521,6431,2291,93147,32251,000
Johnson County161,8183,1652252491,2161,0552,3674565711,13519,39028,122
Henry County19,7113846176013198971,8115,421
Iowa County16,728140003314609904,098
Jefferson County15,862251122185198391261511,7844,209
Louisa County10,6932001711196501,2633,287
Keokuk County9,8880000001636433,023
 
Per Cent to Total PopulationDiversity
Index
 

Washington County16.690.200.100.000.070.000.000.010.110.007.4628.11
Iowa12.520.360.190.040.230.270.590.500.250.259.4822.04
National7.831.300.880.230.450.561.590.480.360.5613.7914.86
Johnson County9.661.960.140.150.750.651.460.280.350.7011.9817.38
Henry County15.380.190.230.090.030.000.071.000.050.049.1927.50
Iowa County17.380.010.020.000.000.000.200.080.040.005.9224.50
Jefferson County12.070.160.070.010.011.171.250.250.790.9511.2526.54
Louisa County16.590.020.000.000.010.070.101.830.050.0011.8130.74
Keokuk County18.590.000.000.000.000.000.000.010.060.036.5030.57
 
Comparisons to State Norms % to Total >= 150% % to Total < 50% 

Washington County 56.7051.140.0029.330.000.002.6745.970.0078.71127.53
Iowa 100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00
National 362.77461.68623.66198.84204.04270.8096.34143.40229.35145.4167.40
Johnson County 545.9673.20415.46332.75238.71249.3956.72141.28286.01126.3878.84
Henry County 53.81122.85232.8613.480.0011.24202.1918.2814.4896.90124.77
Iowa County 1.6712.590.000.000.0033.6316.8514.360.0062.42111.14
Jefferson County 43.9936.5134.045.58427.02212.8249.49318.03388.17118.62120.38
Louisa County 5.220.000.004.1423.9717.54368.9418.720.00124.58139.45
Keokuk County 0.000.000.000.000.000.002.0424.2912.3768.59138.69
 
Comparisons to National Norms % to Total >= 150% % to Total < 50% 

Washington County 15.6311.080.0014.750.000.002.7732.060.0054.13189.20
Iowa 27.5721.6616.0350.2949.0136.93103.8069.7443.6068.77148.36
National 100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00
Johnson County 150.5015.8566.62167.35116.9992.1058.8898.52124.7086.92116.97
Henry County 14.8326.6137.346.780.004.15209.8712.756.3166.64185.10
Iowa County 0.462.730.000.000.0012.4217.4910.010.0042.93164.88
Jefferson County 12.137.915.462.81209.2878.5951.37221.78169.2581.58178.59
Louisa County 1.440.000.002.0811.756.48382.9613.060.0085.67206.89
Keokuk County 0.000.000.000.000.000.002.1116.945.3947.17205.76


Sources: STI: PopStats, Circa April 2025