Here’s a break down of parish size in the Lutheran Church:Missouri Synod based on what I believe to be the single most important parish statistic: average worship attendance.

Sorted by average attendance, then number of congregations that fall in that range, then percentage of congregations reporting the statistic. The largest single group of congregations fall into to the 26-50 average worship attendance category.

0-25 572 / 10%
26-50 1114 / 19%
51-75 884 / 15%
76-100 737 / 13%
101-125 498 / 9%
126-150 375 / 6%
151-200 524 / 9%
201-300 499 / 9%
301-400 254 / 4%
501-600 188 / 3%
601-700 41 / .07%
701-900 51 / .08%
901-1200 38 / .07%
1201-1600 11 / .01%
1601-2000 6 / .01%