Population.us

Population of Johnston, IA

Last official estimated population of Johnston city (Polk County**, Iowa state) was 20,359 (year 2014)^[1]. This was 0.006% of total US population and 0.65% of total Iowa state population. Area of Johnston city is 18.3 mi² (=47.5 km²)^[6], in this year population density was 1,110.81 p/mi². If population growth rate would be same as in period 2010-2014 (+4.19%/yr), Johnston city population in 2024 would be 30,684*.

Historical population

Historical population of Johnston city for period 1970-2014:

Johnston city on population map

Estimated population for 2014^[1]. Click on flag to hide it.

Population • Legends • Position

Settlements near Johnston city

• Des Moines city population 9.2 mi, 144°
• West Des Moines city 9.7 mi, 200°
• Ankeny city 6.6 mi, 60°
• Urbandale city 4.5 mi, 227°
• Waukee city 9.7 mi, 234°
• Clive city 6.4 mi, 222°
• Grimes city 4.5 mi, 267°
• Windsor Heights city 5.3 mi, 178°
• Polk City city 7 mi, 356°
• Granger city 8 mi, 314°

Sources, notices

*Calculated by population.us from last known population growth rate, not official data.

**Some cities are placed on more than one county. Only 1 county is shown.

[1] Cities and Towns (Incorporated Places and Minor Civil Divisions) 2014, archived from the original, retrieved 02/23/2016

[2] City and Town Intercensal Estimates (2000-2010), archived from the original, retrieved 02/23/2016

[3] Places: 1990 and 1999 Populations, With Numeric and Percent Population Change, archived from the original, retrieved 02/23/2016

[4] Population of the 100 Largest Urban Places: 1980,

[5] Population of the 100 Largest Urban Places in history,

[6] Area, latitude longitude data, retrieved 02/23/2016

[7] Through the Decades, Overview 1790-2010, PDF, large files! >100 Mb