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Johnson 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:

17.44

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)

Johnson County13,3141,00129676383294063876254249
Illinois (in 000's)12,7843341632601,81196109661,099348291
National (in 000's)343,25113,8902,21362611,32738,8796,1814,6443,68725,8937,8527,174
Williamson County66,9944,655238104361,025173481421,838389353
Saline County22,6812,13656015024936018371137115
Union County16,9811,14242736541681241133234
Massac County13,6931,0392541827251127580146132
Pulaski County4,93229229015133005861272267
Pope County3,79536410275300010366
 
Per Cent to Total PopulationDiversity
Index
 

Johnson County17.447.520.220.050.572.880.220.300.476.581.911.87
Illinois8.322.610.120.022.0314.170.750.850.528.602.722.28
National7.834.050.640.183.3011.331.801.351.077.542.292.09
Williamson County16.026.950.360.010.651.530.260.070.212.740.580.53
Saline County17.979.420.250.000.661.100.160.000.081.640.600.51
Union County22.516.730.250.040.023.850.990.010.140.670.190.20
Massac County16.527.590.180.030.131.990.370.090.054.241.070.96
Pulaski County14.665.920.590.000.302.700.000.000.1017.465.525.41
Pope County20.179.590.030.000.711.400.000.000.002.710.160.16
 
Comparisons to State Norms % to Total >= 150% % to Total < 50% 

Johnson County 287.52174.76194.8928.0720.3029.0135.2891.7376.5270.1282.06
Illinois 100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00
National 154.75517.34789.18162.2779.93239.84158.89208.2187.7384.0891.71
Williamson County 265.72285.0464.5532.0010.8034.398.4141.0931.9121.3423.12
Saline County 360.15198.100.0032.527.7521.140.0015.3819.0222.2022.25
Union County 257.19198.45178.270.8727.18131.770.6927.407.746.938.79
Massac County 290.18146.49126.336.4614.0249.6110.299.9149.2639.1942.30
Pulaski County 226.42471.770.0014.9619.030.000.0019.65203.04202.70237.54
Pope County 366.8121.140.0034.999.860.000.000.0031.575.816.94
 
Comparisons to National Norms % to Total >= 150% % to Total < 50% 

Johnson County 185.7933.7824.7017.3025.4012.1022.2144.0687.2283.4089.48
Illinois 64.6219.3312.6761.63125.1041.6962.9448.03113.98118.94109.04
National 100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00
Williamson County 171.7155.108.1819.7213.5114.345.3019.7336.3725.3825.21
Saline County 232.7238.290.0020.049.698.810.007.3921.6826.4124.26
Union County 166.1938.3622.590.5434.0054.940.4413.168.828.249.58
Massac County 187.5128.3216.013.9817.5420.686.484.7656.1546.6146.12
Pulaski County 146.3191.190.009.2223.810.000.009.44231.42241.09259.01
Pope County 237.024.090.0021.5612.330.000.000.0035.986.917.56
 
Ancestry Report Part II
DescriptionTotal Population Canadian British Dutch French German Italian Polish Scandi­navian Scotish/ Irish Spanish Other European

Johnson County13,31434891591001,2449017411492529217
Illinois (in 000's)12,78420481691061,20736442323378922459
National (in 000's)343,2511,35018,0691,8283,64224,7089,0274,6675,96920,6251,1409,563
Williamson County66,994396,6063981,0097,3552,0758638706,720341,540
Saline County22,681191,9541492972,299475135652,97042466
Union County16,981331,256802182,3281931801371,24060212
Massac County13,693171,283531191,968137130961,2390123
Pulaski County4,9322197152233325535189524
Pope County3,79502851939456492486401016
 
Per Cent to Total PopulationDiversity
Index
 

Johnson County17.440.266.690.440.759.340.681.310.866.950.221.63
Illinois8.320.163.770.540.839.442.853.311.826.170.183.59
National7.830.395.260.531.067.202.631.361.746.010.332.79
Williamson County16.020.069.860.591.5110.983.101.291.3010.030.052.30
Saline County17.970.088.620.661.3110.142.090.600.2913.090.192.05
Union County22.510.197.400.471.2813.711.141.060.817.300.351.25
Massac County16.520.129.370.390.8714.371.000.950.709.050.000.90
Pulaski County14.660.043.990.300.456.750.510.100.713.830.100.49
Pope County20.170.007.510.501.0312.021.290.632.2710.570.000.42
 
Comparisons to State Norms % to Total >= 150% % to Total < 50% 

Johnson County 161.65177.7382.3890.9598.9423.7439.5246.99112.60124.4345.37
Illinois 100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00
National 248.99139.8099.00128.4876.2392.3641.1195.4297.38189.7777.56
Williamson County 36.85261.87110.44182.38116.26108.7738.9571.26162.5728.9963.99
Saline County 53.03228.80122.12158.57107.3473.5518.0015.73212.22105.7857.19
Union County 123.02196.4387.58155.46145.1739.9132.0544.27118.35201.8534.75
Massac County 78.59248.8471.95105.24152.1935.1428.7138.47146.650.0025.00
Pulaski County 25.67106.0856.5454.0271.5017.803.0738.9462.1157.9113.55
Pope County 0.00199.4493.07124.45127.2445.3419.12124.35171.250.0011.74
 
Comparisons to National Norms % to Total >= 150% % to Total < 50% 

Johnson County 64.92127.1383.2170.79129.8025.7096.1249.24115.6365.5758.50
Illinois 40.1671.53101.0177.83131.19108.27243.24104.80102.6952.70128.94
National 100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00
Williamson County 14.80187.32111.55141.96152.52117.7794.7574.68166.9415.2882.51
Saline County 21.30163.66123.36123.42140.8179.6343.7816.48217.9355.7473.74
Union County 49.41140.5188.46121.00190.4543.2277.9646.40121.53106.3744.81
Massac County 31.56178.0072.6881.91199.6638.0469.8340.32150.590.0032.24
Pulaski County 10.3175.8857.1142.0493.8019.277.4640.8163.7830.5217.47
Pope County 0.00142.6694.0196.86166.9349.0946.51130.32175.860.0015.13
 
Ancestry Report Part III
DescriptionTotal Population Chinese Filipino Japanese Korean Vietnamese South Central Asian South East Asian Other Asian Middle Eastern Other Ancestry Unknown

Johnson County13,31400001480251,6114,791
Illinois (in 000's)12,7841371301860272914933751,5811,775
National (in 000's)343,2514,4613,0107931,5411,9135,4521,6431,2291,93147,32251,000
Williamson County66,9942331861932852216459967,03522,148
Saline County22,6813235020123330142,4467,947
Union County16,981939025111141,5387,214
Massac County13,6932012400513181,8194,360
Pulaski County4,93233000020201,0041,174
Pope County3,7952050002003861,465
 
Per Cent to Total PopulationDiversity
Index
 

Johnson County17.440.000.000.000.000.110.060.000.020.0412.1035.98
Illinois8.321.071.010.140.470.212.270.390.260.5912.3713.89
National7.831.300.880.230.450.561.590.480.360.5613.7914.86
Williamson County16.020.350.280.030.050.130.330.100.090.1410.5033.06
Saline County17.970.140.150.000.090.050.010.010.130.0610.7835.04
Union County22.510.050.230.000.010.030.010.010.060.029.0642.48
Massac County16.520.010.000.010.180.000.000.040.090.1313.2831.84
Pulaski County14.660.060.060.000.000.000.000.040.000.4120.3623.80
Pope County20.170.050.000.130.000.000.000.050.000.0010.1738.60
 
Comparisons to State Norms % to Total >= 150% % to Total < 50% 

Johnson County 0.000.000.000.0049.022.640.005.746.3897.85259.15
Illinois 100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00
National 121.6886.44160.9195.48259.7869.82124.24136.8995.61111.49107.00
Williamson County 32.5627.3719.7610.1659.1414.5024.8033.6624.3684.92238.09
Saline County 13.2115.210.0018.7524.660.583.4350.5510.4987.21252.34
Union County 4.9622.640.002.5013.730.261.5324.764.0073.24305.95
Massac County 1.370.005.0937.270.000.009.4836.2822.35107.43229.31
Pulaski County 5.706.000.000.000.000.0010.530.0068.93164.62171.43
Pope County 4.930.0091.780.000.000.0013.680.000.0082.25278.01
 
Comparisons to National Norms % to Total >= 150% % to Total < 50% 

Johnson County 0.000.000.000.0018.873.780.004.196.6887.77242.19
Illinois 82.18115.6862.15104.7438.49143.2380.4973.05104.5989.7093.46
National 100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00100.00
Williamson County 26.7631.6612.2810.6422.7720.7719.9624.5925.4876.17222.50
Saline County 10.8617.600.0019.649.490.832.7636.9310.9778.22235.82
Union County 4.0826.190.002.625.280.371.2318.094.1965.70285.93
Massac County 1.120.003.1639.030.000.007.6326.5123.3796.36214.30
Pulaski County 4.686.940.000.000.000.008.470.0072.10147.66160.21
Pope County 4.060.0057.040.000.000.0011.010.000.0073.78259.82


Sources: STI: PopStats, Circa April 2025