The United States Constitution requires that every 10 years a Census shall be conducted to apportion the United States House of Representatives. The first Census began on August 2, 1790 when the total United States population was 3,919,214 people.
Activity is already starting in the preparation of Census 2020 and this page will be a source of information for Delaware County.
The County will be conducting the Local Update of Certified Addresses (LUCA) for all communities except Dublin, Columbus, and Westerville, which are performing their own review. If we feel that portions of the address update need to be checked by individual communities, particularly in municipalities, we will be contacting you individually.
Delaware County will be creating a Complete Count Committee to get the word out on how important it is to have a complete record of our population. Resources will be regularly updated below.
View 2010 Census information or current American Community Survey information for each municipality and township:
| Title | Upload Date |
| 1790 Census – Cover – Full Return | 5/9/19 |
| Delaware County Summary – What is the Census | 5/9/19 |
| 50 Ways Census Data are Used | 5/9/19 |
| Are Census Data Really Confidential? | 5/9/19 |
| County Commissioner Resolution | 5/9/19 |
| What is a Census Solutions Workshop? | 5/9/19 |
| Philadelphia Region’s Partnership Newsletter. issuu.com | 9/4/18 |
| Introduction to the 2020 Census (Powerpoint) | 12/14/17 |
| 2010 Map – Percent Change in Population by County | 12/14/17 |
| 2016 Map – Ohio County Population Estimates with percent change | 12/14/17 |
| How local governments can collaborate with the Census Bureau | 12/14/17 |
| How the American Community Survey Works for your Community | 12/14/17 |
| Measuring America – How the ACS works Page 1 | 12/14/17 |
| Measuring America – How the ACS works Page 2 | 12/14/17 |
2010 Census Tracts
Ashley
111.01
Berkshire
116.04, 123
Berlin
115.50, 115.60
Brown
111.01, 111.02
Concord
114.11, 114.12 114.13
Columbus City
115.61, 124
Delaware City
101, 102
104.20, 104.21 104.22
105.20, 105.30
111.02
112
114.13
115.50
121, 122
Delaware Township
102
104.20, 104.21
105.20
122
Dublin
14.11, 114.12
Galena
116.04, 123
Genoa
117.10, 117,30
117.40, 117.50
117.60, 117.62
Harlem
117.50, 117.6
Kingston
111.02
Liberty
114.21, 114.23
114.30
119, 121
Marlboro
112
Orange
115.20, 115.30
115.40, 115.50
115.60, 115.61
117.62
124
Ostrander
120
Oxford
111.01
Porter
11.02
Powell
114.21, 114.23
114.30
119, 121
Radnor
112, 12
Scioto
12
Shawnee Hills
114.11, 114.12
Sunbury
116.04
123
Thompson
120
Trenton
123
Troy
112
Westerville
117.10, 117.50
117.62
124
