The town of Topsail Beach has a total area of only 15.2 kmČ, or 5.8 miČ. Out of that 5.8 miČ, 1.5 miČ, or 25.30%, is water. The town is near Pender County, North Carolina, and as of 2000, had a population of only 471. Out of the 471 residents of Topsail Beach, there were 252 households and 159 families. The town is mainly Caucasian, with 99.36% of its residents identifying themselves as white, the rest of the population is made up of 0.21% Native American, 0.21% Asian, 0.00% African American, 0.00% Pacific Islander, and 0.21% from other races.
Of the 252 households in the area, 9.5% had children living in them, while over half (58.3%) contained married couples with no children under the age of 18 living with them. Only 2.0% of these households were run by single women with no husbands, and 36.9% contained non-families. 10.7% of the 252 households were owned by someone 65 or older who was living by his or her self. The average size of the households in Topsail, North Carolina, was 1.87, with the family size averaging 2.26 people.
Dividing the population according to age shows that only 7.0% of the population of Topsail Beach, North Carolina, were children under the age of 18. 4.5% of the population were between the ages of 18 and 24, 17.6% were between the ages of 25 and 44, 44.2% between the ages of 45 and 64. The remaining quarter of the population (26.8%) were adults over the age of 65. These statistics show that the median age of the population of Topsail Beach is 56 years old. There is a very close ratio of woman to men, 100 to 99.6, and in the 18 and over age bracket, the ratio was 100 females to 102.8 males.
The average household income in Topsail Beach, North Carolina was $55,750, with the average income for families reaching $64,167. Males in Topsail Beach averaged $45,313, while females averaged much less, $25,139. The town on the whole averaged $35,838 as the per capita income, which places 6.7% of the population below the poverty line, 0.8% of which are families. Statistics show that 0.00% of the adult population over the age of 65 were living below the poverty level, whereas 3.8% of children under the age of 18 were.