**Table 1:** Comparison of total population and nativity percentages over time.
Year	Total Pop	Foreign Born	Native Born
2024	156,639	9.8%	90.2%
2023	154,881	10.2%	89.8%
2022	153,360	11.0%	89.0%
2021	151,833	10.8%	89.2%
2020	150,819	11.6%	88.4%
2019	148,577	11.9%	88.1%
2018	147,001	11.6%	88.4%
2017	144,425	10.6%	89.4%
2016	142,006	10.4%	89.6%
2015	139,436	10.1%	89.9%
2014	136,802	9.8%	90.2%
2013	134,034	9.3%	90.7%
2012	131,627	9.2%	90.8%
2011	129,159	8.5%	91.5%
2010	126,994	8.2%	91.8%

Nativity & Citizenship FAQs for Johnson County, Iowa

Approximately 9.8% of residents in Johnson County, Iowa were born outside the United States.

The vast majority of residents, roughly 94.8%, are U.S. citizens (including both native-born and naturalized citizens).

Johnson County, Iowa Nativity & Citizenship Status (2024)