The Village of Lynbrook is inside the Town of Hempstead. The Village of Lynbrook's current mayor is Brian Curran.
Lynbrook is part of the fourth congressional District of New York State, which is currently represented by Democrat Carolyn McCarthy. Lynbrook is also part of New York State Senate District 9, which is currently represented by Republican Dean Skelos. It's also part of the New York State 14th Assembly District, which is represented by Republican Robert Barra, who resides in Lynbrook. Long Island Rail Road service to the New York City boroughs of Manhattan and Brooklyn is available at the Lynbrook station located at the intersection of Sunrise Highway and Peninsula Boulevard.
Since 1911 Lynbrook has been served by the Lynbrook Police Department. The Department provides patrol services 24 hours a day / 7 days a week. The Chief of the Department is Joseph Neve.
In addition to public schools, Lynbrook also has a parochial school, Our Lady of Peace School. Located on Merrick Road, the school houses students from preschool to 8th grade.
According to the United States Census Bureau, the village has a total area of 2.0 square miles (5.2 km²)..
There were 7,369 households out of which 30.5% had children under the age of 18 living with them, 58.4% were married couples living together, 9.9% had a female householder with no husband present, and 28.9% were non-families. 24.8% of all households were made up of individuals and 11.9% had someone living alone who was 65 years of age or older. The average household size was 2.66 and the average family size was 3.20.
In the village the population was spread out with 22.5% under the age of 18, 6.1% from 18 to 24, 30.4% from 25 to 44, 23.4% from 45 to 64, and 17.7% who were 65 years of age or older. The median age was 40 years. For every 100 females there were 89.7 males. For every 100 females age 18 and over, there were 86.0 males.
The median income for a household in the village was $62,373, and the median income for a family was $75,023. Males had a median income of $50,795 versus $36,545 for females. The per capita income for the village was $27,211. About 2.5% of families and 4.2% of the population were below the poverty line, including 3.6% of those under age 18 and 7.5% of those age 65 or over.