Silverdale is located at . According to the United States Census Bureau, the borough has a total area of, all of it land.
Demographics
As of the 2010 census, the borough was 97.2% White, 0.8% Black or African American, 0.2% Native American, 0.1% Asian, and 0.3% were two or more races. 1.4% of the population were of Hispanic or Latino ancestry. As of the census of 2000, there were 1,001 people, 323 households, and 264 families residing in the borough. The population density was 2,220.0 people per square mile. There were 329 housing units at an average density of 729.7 per square mile. The racial makeup of the borough was 99.00% White, 0.20% African American, 0.10% Native American, 0.10% Asian, 0.30% from other races, and 0.30% from two or more races. Hispanic or Latino of any race were 0.80% of the population. There were 323 households, out of which 48.9% had children under the age of 18 living with them, 73.4% were married couplesliving together, 5.9% had a female householder with no husband present, and 18.0% were non-families. 13.0% of all households were made up of individuals, and 4.3% had someone living alone who was 65 years of age or older. The average household size was 3.08 and the average family size was 3.45. In the borough the population was spread out, with 32.5% under the age of 18, 6.5% from 18 to 24, 35.3% from 25 to 44, 19.6% from 45 to 64, and 6.2% who were 65 years of age or older. The median agewas 34 years. For every 100 females there were 111.6 males. For every 100 females age 18 and over, there were 103.0 males. The median income for a household in the borough was $62,250, and the median income for a family was $68,594. Males had a median income of $42,431 versus $29,500 for females. The per capita income for the borough was $23,814. About 2.6% of families and 2.1% of the population were below the poverty line, including 1.3% of those under age 18 and 14.8% of those age 65 or over.
Climate
According to the Köppen climate classification system, Silverdale has a Hot-summer, Humid continental climate. Dfa climates are characterized by at least one month having an average mean temperature ≤, at least four months with an average mean temperature ≥, at least one month with an average mean temperature ≥ and no significant precipitation difference between seasons. Although most summer days are slightly humid in Silverdale, episodes of heat and high humidity can occur with heat index values >. Since 1981, the highest air temperature was on 07/22/2011, and the highest daily average mean dew point was on 08/12/2016. The average wettest month is July which corresponds with the annual peak in thunderstorm activity. Since 1981, the wettest calendar day was on 08/27/2011. During the winter months, the average annual extreme minimum air temperature is. Since 1981, the coldest air temperature was on 01/22/1984. Episodes of extreme cold and wind can occur with wind chill values <. The average annual snowfall is between and. Ice storms and large snowstorms depositing ≥ of snow occur once every few years, particularly during nor’easters from December through February.
