Last official estimated population of Pioneer city (Humboldt County**, Iowa state) was 23 (year 2014)[1]. This was 0% of total US population and 0% of total Iowa state population. Area of Pioneer city is 0.1 mi² (=0.2 km²)[6], in this year population density was 359.38 p/mi². If population growth rate would be same as in period 2010-2014 (0%/yr), Pioneer city population in 2026 would be 23*.
Historical population of Pioneer city for period 1910-2014:
Estimated population for 2014[1]. Click on flag to hide it.
Population • Legends • Position
[1910-1920] -0.91 %/yr
[1920-1930] +1.55 %/yr
[1930-1940] +2.79 %/yr
[1940-1950] -4.31 %/yr
[1950-1960] -0.88 %/yr
[1960-1970] -3.01 %/yr
[1970-1980] -3.31 %/yr
[1980-1990] +1.41 %/yr
[1990-2000] -7.54 %/yr
[2000-2005] +0.93 %/yr
[2005-2010] +0.89 %/yr
[2010-2014] 0 %/yr
• Humboldt city population
9.7 mi, 
60°
• Manson city
11.5 mi, 
221°
• Dakota City city
11 mi, 63°
• Badger city
12.8 mi, 
102°
• Gilmore City city
5.6 mi, 
335°
• Barnum city
10.3 mi, 
172°
• Palmer city
10.7 mi, 
261°
• Clare city
5.1 mi, 
152°
• Rutland city
8.9 mi, 
33°
• Bradgate city
10.4 mi, 
351°
*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
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