Surname distribution maps for Co
Co in the 1881 Census
Co in the 21st Century
Sorry, we don't have any stats for the distribution of Co in the 21st Century.
The maps, if available, show both where there are more people named Co and where they are most concentrated.
The darker the colour, the more people in that county are named Co.
The larger the dot, the greater the proportion of people in that county are named Co.
Hovering over the dots will give you the individual statistics for that county.