Hard-to-Count Areas

"Hard-to-Count" (HTC) scores are derived from 12 variables that are correlated with high nonresponse rates.

  1. Vacant Units (percent)
  2. Multi-family Housing Units (percent)
  3. Renter Occupied Units (percent)
  4. Occupied Units with More Than 1.5 Persons Per Room (percent)
  5. Households that are Not Husband/Wife Families (percent)
  6. Occupied Units with No Telephone Service (percent)
  7. Adults that are Not High School Graduates (percent)
  8. People Below Poverty (percent)
  9. Households with Public Assistance Income (percent)
  10. People Unemployed (percent)
  11. Linguistically Isolated Households (percent)
  12. Occupied Units Where Householder Recently Moved Into Unit (percent)

Scores can range from 0 to 132. High scores indicate high concentrations of attributes that make enumeration difficult, which increase the likelihood of an undercount. This information comes from the Census 2010 Planning Database, which uses Census 2000 data.

Maps of Hard-to-Count Areas

Click here for a statewide map of all census tracts by hard-to-count score.

County-Level Maps

The areas below have at least one tract above the national average HTC score of 33. Maps are in pdf format.