The 2000 U.S. Census report states that Chapel Hill's population has increased by 26 percent since 1990, and Carrboro's population has increased by 45 percent.
Orange County's total population increase in the past decade was 26 percent, to a total count of 118,227.
Chapel Hill Town Council member Flicka Bateman said providing affordable housing for the greater number of residents is not easy given the scarcity of undeveloped land in Chapel Hill.
"We're trying, but it's a very hard goal to meet," she said.
Bateman said Orange County will hold a bond referendum in November that will include $2 million for affordable housing development.
Bateman said if the bond passes, nonprofit organizations like Habitat for Humanity will build the houses and that the cost of buying them will be subsidized by the bond money.
Bateman also said that not only people in the lowest income levels have trouble affording local housing.
"When we talk about affordable housing, we're talking about housing for nurses, firemen and teachers," she said.
Council member Pat Evans said the town's need for funding increases with the population and that officials are considering a tax increase in the near future.