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Owner Occupancy

Description: 

The American Community Survey (ACS) has been conducted on an ongoing basis for the entire country since 2005. Annually, calendar-year ACS results are released for areas with a population of at least 65,000. Due to the small sample size, single-year estimates are not available for less-populous areas. Combined estimates for three years of data are available annually for areas with a population of at least 20,000; five years of data are combined for less populous areas. The substantial sampling error present in the ACS is discussed in the data quality comments section below.

The ACS questionnaire asks respondents to indicate whether they own their house (with or without a mortgage) or rent. The percentage of housing units that are owner occupied is shown on Arizona Indicators. Annual data since 2005 are presented for the United States and Arizona, but data for each of the 15 Arizona counties are limited to a five-year average due to the substantial sampling error.

Data Source: 

U. S. Department of Commerce, Census Bureau http://factfinder2.census.gov/faces/nav/jsf/pages/index.xhtml. Annual ACS estimates are released in September; five-year averages are available in December.

Data Quality Comments: 

The Census Bureau publishes the ACS sampling error with every estimate, expressed as the margin of error with 90 percent confidence. The following is an example:

The estimate of the poverty rate in Maricopa County in 2009 was 15.2 percent, with a margin of error of + or – 0.6 percentage points. The interpretation is that there is a 90 percent likelihood that the actual poverty rate was within the confidence interval of 14.6 percent to 15.8 percent. A one-in-ten chance exists that the real rate was outside this range.

For the nation and other very populous areas, the annual ACS estimates are highly accurate. For moderately populous areas such as Arizona, sampling error is moderately large, so caution is urged in using the annual ACS data for the state. The sampling error for less populous areas, such as most of Arizona’s counties, is quite large, even when using five-year averages. Thus, considerable caution is urged in using the five-year ACS data for counties other than Maricopa and Pima.

The published margin of error should be taken into consideration when deciding whether to use a result from the ACS. Whether the reported sampling error is too large depends on the user’s purpose for accessing the data and on the volatility of the measure over time and across geographic areas.

iconPercentage of Housing Units Owner Occupied

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Visualization Notes:

The percentage of occupied housing units lived in by their owners in Arizona was more than a percentage point higher than the national average in 2005 but more than a percentage point lower in 2012. Between 2006 and 2013, the homeownership rate fell 3.8 percentage points nationally and 6.4 points in Arizona.

iconPercentage of Housing Units Owner Occupied, 2009-to-2013 Average

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Visualization Notes:

Between 2009 and 2013, owner occupancy in Arizona was a little lower than the national average of 64.9 percent. In Apache, Gila, Graham, and Pinal counties, the proportion exceeded 74 percent, but it was only 46 percent in Greenlee County.

Data Source

U. S. Department of Commerce, Census Bureau http://factfinder2.census.gov/faces/nav/jsf/pages/index.xhtml. Annual ACS estimates are released in September; five-year averages are available in December.