Datasets

Arlington County - GIS Portal

Photo Index 1956

This map service contains historical aerial photograph index layers representing aerial imagery acquisition years from 1934 through 1989 for Arlington County, Virginia. Each index polygon identifies the footprint and…

Arlington County - GIS Portal

Photo Index 1962

This map service contains historical aerial photograph index layers representing aerial imagery acquisition years from 1934 through 1989 for Arlington County, Virginia. Each index polygon identifies the footprint and…

Arlington County - GIS Portal

Photo Index 1957

This map service contains historical aerial photograph index layers representing aerial imagery acquisition years from 1934 through 1989 for Arlington County, Virginia. Each index polygon identifies the footprint and…

Arlington County - GIS Portal

Photo Index 1974

This map service contains historical aerial photograph index layers representing aerial imagery acquisition years from 1934 through 1989 for Arlington County, Virginia. Each index polygon identifies the footprint and…

Arlington County - GIS Portal

Photo Index 1969

This map service contains historical aerial photograph index layers representing aerial imagery acquisition years from 1934 through 1989 for Arlington County, Virginia. Each index polygon identifies the footprint and…

Arlington County - GIS Portal

Photo Index 1967

This map service contains historical aerial photograph index layers representing aerial imagery acquisition years from 1934 through 1989 for Arlington County, Virginia. Each index polygon identifies the footprint and…

Arlington County - GIS Portal

Photo Index 1980

This map service contains historical aerial photograph index layers representing aerial imagery acquisition years from 1934 through 1989 for Arlington County, Virginia. Each index polygon identifies the footprint and…

Arlington County - GIS Portal

Photo Index 1977

This map service contains historical aerial photograph index layers representing aerial imagery acquisition years from 1934 through 1989 for Arlington County, Virginia. Each index polygon identifies the footprint and…

Arlington County - GIS Portal

Photo Index 1982

This map service contains historical aerial photograph index layers representing aerial imagery acquisition years from 1934 through 1989 for Arlington County, Virginia. Each index polygon identifies the footprint and…

Arlington County - GIS Portal

Photo Index 1983

This map service contains historical aerial photograph index layers representing aerial imagery acquisition years from 1934 through 1989 for Arlington County, Virginia. Each index polygon identifies the footprint and…

Arlington County - GIS Portal

Photo Index 1986

This map service contains historical aerial photograph index layers representing aerial imagery acquisition years from 1934 through 1989 for Arlington County, Virginia. Each index polygon identifies the footprint and…

Arlington County - GIS Portal

Photo Index 1989

This map service contains historical aerial photograph index layers representing aerial imagery acquisition years from 1934 through 1989 for Arlington County, Virginia. Each index polygon identifies the footprint and…

Datathon 2025

Mile Marker Signs

This dataset contains the mapped locations of VDOT Mile Marker Signs (also known as Reference Location Signs or Mile Post Signs). These are physical roadside signposts installed for field reference and may differ from…

Fairfax County

Supervisor Districts

This layer represents the geographic boundaries of Supervisor Districts within Fairfax County. Contact: Fairfax County Office of Elections Data Accessibility: Publicly Available Update Frequency: As Needed Last Revision…

City of Alexandria - GIS Portal

Sanitary Sewer Lines

City of Alexandria - GIS Portal

Sanitary Sewer Device

City of Alexandria - GIS Portal

Storm Sewer Line

City of Alexandria - GIS Portal

Storm Sewer Device

Fairfax County

Political Jurisdictions

Geographic boundary, portraying extent and limits of land recognized as Fairfax County, Commonwealth of Virginia. Defined in part by both physical features (Potomac and Occoquan Rivers), and monumented legal boundaries…

Fairfax County

Radon Potential Areas

Areas of radon potential within Fairfax County. These are short-term test results from a study conducted by the Fairfax County Health Department during the winters of 1986-87 and 1987-88 found that radon levels above…