The 20th state house district is located in east central Franklin County and contains all of:

Bexley
Gahanna
Whitehall

and contains the following precincts in other communities:

Blendon Twp - Precincts A, C, D, E (part), F & G
Columbus Ward 27 - Precincts A, B & D
Columbus Ward 46 - Precincts A, B, C & H
Columbus Ward 62
Columbus Ward 73
Columbus Ward 81 - Precincts A (part), B, C, D & E
Columbus Ward 82 - Precincts A, B, C, D (part), E (part), G (part), H (part) & I (part)
Columbus Ward 84
Jefferson Twp - Precincts A (part), E (part) & F (part)
Plain Twp - Precinct A (part)
Truro Twp - Precinct A (part)

For a more detailed view of the district click on this link to get a detailed PDF in which you can zoom into the street level.