As of 2009, the mayor is Nick Vay.[1]
Lincoln does not have its own post office. Two ZIP codes are used in the borough: 15133 for the northern portion of the borough adjacent to Liberty, with mail addressed to the city of McKeesport, and 15037 for the majority of the borough, with mail addressed to Elizabeth.
Lincoln is part of the South Allegheny School District, along with Liberty, Glassport and Port Vue.
As of the census of 2000, there were 1,218 people, 482 households, and 359 families residing in the borough. The population density was 253.9 people per square mile (98.0/km²). There were 506 housing units at an average density of 105.5/sq mi (40.7/km²). The racial makeup of the borough was 98.77% White, 0.66% African American, 0.08% Native American, 0.33% Asian, and 0.16% from two or more races. Hispanic or Latino of any race were 0.74% of the population.
There were 484 households out of which 24.8% had children under the age of 18 living with them, 62.4% were married couples living together, 8.9% had a female householder with no husband present, and 25.8% were non-families. 22.1% of all households were made up of individuals and 9.3% had someone living alone who was 65 years of age or older. The average household size was 2.52 and the average family size was 2.94.
In the borough the population was spread out with 19.0% under the age of 18, 5.9% from 18 to 24, 27.2% from 25 to 44, 28.1% from 45 to 64, and 19.9% who were 65 years of age or older. The median age was 43 years. For every 100 females there were 92.1 males. For every 100 females age 18 and over, there were 91.3 males.
The median income for a household in the borough was $37,917, and the median income for a family was $43,333. Males had a median income of $35,852 versus $21,131 for females. The per capita income for the borough was $18,447. About 6.9% of families and 9.1% of the population were below the poverty line, including 8.4% of those under age 18 and 14.2% of those age 65 or over.