Census 2010 has population data based on the latest decennial census, or headcount taken once every 10 years. These numbers reflect an actual count of the population.
Census 2010 used only the "short form" questionnaire with room for household count and a few simple demographics like age, gender, race, and housing tenure (own/rent).
Population Finder is a web tool to get population data based on the 2010 Census. Generates a "mini" profile of the geography chosen. Use the drop-downs on the left side of the page to select areas within the state.
Population Estimates are released on an annual basis and reflect an "estimated" population of each state, county, and city as of July 1.
2012 Community Estimates
2012 County Estimates
County Population Percent Change
Map reflects percent change in county population from 2011 estimate to 2012 estimate.
2011 Community Estimates
Population estimates as of July 1, 2011 for each community in North Dakota.