Summary
I found 9 entries and localized them in 6 different counties. There are around 24 people with this name projected on total population. This is an occurance below average. Insufficient statistical data! The results may not be useful.

Relative Distribution for Sommeregger
Considering the population density the most Sommereggers can be found in Landkreis Passau (BY), namely 10 phonebook entries per million people. The fewest live in Kreisfreie Stadt Berlin.

Absolute Map for Sommeregger
Most Sommereggers can be found in Kreisfreie Stadt München (BY), there are exactly 3 phonebook entries listed. The fewest live in Bodenseekreis (1). (Please note: urban agglomerations can influence this visualization)

Sorted by federal states
This is a diagram for all phonebook entries that can be localized. They are sorted sorted by the federal states of germany (the diffenent size and population is not included in this calculation).