Surname distribution maps for Crumb
Crumb in the 1881 Census
Crumb in the 21st Century
The maps, if available, show both where there are more people named Crumb and where they are most concentrated.
The darker the colour, the more people in that county are named Crumb.
The larger the dot, the greater the proportion of people in that county are named Crumb.
Hovering over the dots will give you the individual statistics for that county.