Ancestry for Decatur County, IA - ERSys®
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Decatur 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:

15.85

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)

Decatur County7,63453719242716511618493925
Iowa (in 000's)3,267138951516129710724015
National (in 000's)343,25113,8902,21362611,32738,8796,1814,6443,68725,8937,8527,174
Union County11,97291423830357106053208
Clarke County9,621569126181,387758321752
Lucas County8,686698500147116351522
Harrison County8,1511,125243017200933102
Wayne County6,66250319222470061602
Ringgold County4,597393702849001131
Mercer County3,512367100510501226400
 
Per Cent to Total PopulationDiversity
Index
 

Decatur County15.857.030.250.310.352.160.010.210.240.640.510.33
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
Union County15.817.630.190.070.252.980.080.050.000.440.170.07
Clarke County13.555.910.120.630.0814.420.070.600.330.180.050.02
Lucas County15.478.040.060.000.001.690.130.730.060.170.020.02
Harrison County20.5313.800.290.040.002.110.000.000.110.400.120.02
Wayne County17.047.550.290.030.330.710.000.000.090.240.000.03
Ringgold County17.948.550.150.000.611.070.000.000.020.020.070.02
Mercer County23.2310.450.280.000.142.990.000.340.740.110.000.00
 
Comparisons to State Norms % to Total >= 150% % to Total < 50% 

Decatur County 166.2691.84188.6377.0943.961.4793.2974.8429.0941.2773.12
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
Union County 180.4570.8940.0954.6260.659.3522.310.0020.0613.5014.92
Clarke County 139.7846.02380.4218.12293.228.14268.32105.578.014.204.64
Lucas County 189.9321.240.000.0034.4214.17322.8318.277.831.865.14
Harrison County 326.22108.6422.080.0042.920.000.0035.0518.359.915.48
Wayne County 178.46105.2318.0171.9814.350.000.0028.5910.880.006.70
Ringgold County 202.0656.190.00132.7721.680.000.006.900.995.274.86
Mercer County 246.99105.060.0031.0360.810.00152.08234.985.160.000.00
 
Comparisons to National Norms % to Total >= 150% % to Total < 50% 

Decatur County 173.8338.60172.2810.7219.080.7315.4921.958.5122.3315.67
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
Union County 188.6629.7936.627.5926.334.643.700.005.877.303.20
Clarke County 146.1519.34347.442.52127.284.0444.5630.972.342.270.99
Lucas County 198.588.930.000.0014.947.0353.615.362.291.011.10
Harrison County 341.0745.6620.170.0018.630.000.0010.285.375.361.17
Wayne County 186.5844.2316.4510.016.230.000.008.393.180.001.44
Ringgold County 211.2623.620.0018.469.410.000.002.030.292.851.04
Mercer County 258.2344.160.004.3126.400.0025.2568.931.510.000.00
 
Ancestry Report Part II
DescriptionTotal Population Canadian British Dutch French German Italian Polish Scandi­navian Scotish/ Irish Spanish Other European

Decatur County7,63410782189531,256436826274227152
Iowa (in 000's)3,2675204733670537211872745100
National (in 000's)343,2511,35018,0691,8283,64224,7089,0274,6675,96920,6251,1409,563
Union County11,972291,2611601341,9731021226111,2976203
Clarke County9,62122880193881,233167173135130182
Lucas County8,68621,0311571051,588141263401,01644179
Harrison County8,151108741175699128119060935214
Wayne County6,6627891420751,04391261776130102
Ringgold County4,59755561125676241151274473125
Mercer County3,5124284262140527259257430
 
Per Cent to Total PopulationDiversity
Index
 

Decatur County15.850.1310.242.480.6916.450.560.893.439.720.351.99
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
Union County15.810.2410.531.341.1216.480.851.025.1010.830.051.70
Clarke County13.550.239.152.010.9112.821.740.183.255.330.001.89
Lucas County15.470.0211.871.811.2118.281.620.303.9111.700.512.06
Harrison County20.530.1210.721.440.6912.160.340.131.107.470.432.63
Wayne County17.040.1113.376.301.1315.661.370.392.669.200.001.53
Ringgold County17.940.1112.092.441.2216.580.890.332.769.720.072.72
Mercer County23.230.118.090.740.6011.530.770.061.687.320.110.85
 
Comparisons to State Norms % to Total >= 150% % to Total < 50% 

Decatur County 80.23164.25110.7262.7576.2149.27137.5059.93115.81232.8265.29
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
Union County 148.36168.8959.77101.1676.3474.53157.3089.12129.0832.9955.60
Clarke County 140.05146.6689.7182.6759.36151.8427.2856.8163.530.0062.03
Lucas County 14.10190.3280.84109.2684.69142.0046.2168.35139.36333.4567.58
Harrison County 75.14171.9364.1962.0956.3230.0520.8319.2889.02282.6686.10
Wayne County 64.36214.45281.95101.7572.52119.4960.2446.39109.630.0050.21
Ringgold County 66.62193.93108.96110.1076.7878.0250.3748.24115.8542.9689.17
Mercer County 69.76129.6633.1154.0453.4267.258.7929.3387.1974.9728.01
 
Comparisons to National Norms % to Total >= 150% % to Total < 50% 

Decatur County 33.30194.60464.8965.44228.5621.4265.52197.37161.76106.4771.46
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
Union County 61.58200.09250.95105.50228.9532.4074.95293.50180.3015.0960.86
Clarke County 58.13173.76376.6886.21178.0466.0013.00187.1088.740.0067.90
Lucas County 5.85225.49339.41113.94253.9861.7222.02225.11194.67152.4973.97
Harrison County 31.19203.70269.5364.76168.9013.069.9363.50124.35129.2694.23
Wayne County 26.71254.071,183.81106.11217.5051.9428.71152.79153.140.0054.95
Ringgold County 27.65229.76457.49114.82230.2833.9124.00158.88161.8319.6597.60
Mercer County 28.96153.62139.0156.36160.2029.234.1996.61121.7934.2930.66
 
Ancestry Report Part III
DescriptionTotal Population Chinese Filipino Japanese Korean Vietnamese South Central Asian South East Asian Other Asian Middle Eastern Other Ancestry Unknown

Decatur County7,634106170041037492,340
Iowa (in 000's)3,267126179191688310720
National (in 000's)343,2514,4613,0107931,5411,9135,4521,6431,2291,93147,32251,000
Union County11,97220020022501,0043,610
Clarke County9,62107200750001,4812,308
Lucas County8,68604310021236172,440
Harrison County8,1510707141405813,133
Wayne County6,66260110110834152,155
Ringgold County4,5970000020123121,548
Mercer County3,51200000001853261,515
 
Per Cent to Total PopulationDiversity
Index
 

Decatur County15.850.010.000.080.220.000.000.050.130.049.8130.65
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
Union County15.810.020.000.000.020.000.000.020.210.008.3930.15
Clarke County13.550.000.070.020.000.000.070.520.000.0015.3923.99
Lucas County15.470.000.500.010.000.000.020.010.020.037.1028.09
Harrison County20.530.000.090.000.090.010.050.010.050.007.1338.44
Wayne County17.040.090.000.020.020.000.020.150.120.056.2332.35
Ringgold County17.940.000.000.000.000.000.040.000.020.046.7933.67
Mercer County23.230.000.000.000.000.000.000.000.510.149.2843.14
 
Comparisons to State Norms % to Total >= 150% % to Total < 50% 

Decatur County 3.660.00212.2198.610.000.0010.5552.4516.02103.48139.06
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
Union County 4.660.000.007.400.000.003.3683.600.0088.45136.79
Clarke County 0.0038.3056.130.000.0012.40104.600.000.00162.35108.83
Lucas County 0.00260.6131.080.000.003.932.329.2214.0874.92127.44
Harrison County 0.0045.210.0038.034.498.372.4719.650.0075.18174.37
Wayne County 25.140.0040.536.650.002.5630.2148.0818.3665.70146.75
Ringgold County 0.000.000.000.000.007.420.008.7117.7471.58152.76
Mercer County 0.000.000.000.000.000.000.00205.2058.0597.90195.70
 
Comparisons to National Norms % to Total >= 150% % to Total < 50% 

Decatur County 1.010.0034.0349.590.000.0010.9536.576.9971.17206.30
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
Union County 1.290.000.003.720.000.003.4958.300.0060.83202.95
Clarke County 0.008.309.000.000.004.58108.580.000.00111.66161.46
Lucas County 0.0056.454.980.000.001.452.416.436.1451.52189.06
Harrison County 0.009.790.0019.122.203.092.5613.700.0051.70258.70
Wayne County 6.930.006.503.340.000.9531.3633.538.0145.18217.71
Ringgold County 0.000.000.000.000.002.740.006.077.7449.23226.64
Mercer County 0.000.000.000.000.000.000.00143.1025.3167.33290.33


Sources: STI: PopStats, Circa April 2025