List of administrative units with the time periods for which genealogical records are available
Grodno Province (gubernia)
- Brest Uezd 1918
Minsk Province (gubernia)
- Pinsk Uezd 1862 - 1918
Bialystok Voevodstvo
- Bialystok Voevodstvo (the whole territory) 1927 - 1939
Povets:
- Bialovezha Povet 1920 - 1939
- Bialystok Povet 1919 - 1939
- Belsk Povet 1919 - 1939
- Logizhen Povet 1919 - 1939
- Lomzha Povet 1927 - 1939
- Ostrov Povet 1919 - 1939
- Ostrov-Mazovetsk Povet 1929 - 1931
- Ostrolenka Povet 1919 - 1939
- Sokolka Povet 1919 - 1939
- Shchuchin Povet 1919 - 1939
- Vysoki Mazovetsk Povet 1919 - 1939
Lublin Voevodstvo
Povets:
- Biala-Podlaska Povet 1922 - 1939
Novogrudok Voevodstvo
Povets:
- Baranovichi Povet 1920 - 1939
- Nesvizh Povet 1920 - 1939
- Novogrudok Povet 1920 - 1939
- Slonim Povet 1920 - 1939
- Stolbtsy Povet 1922 - 1939
Polesie Voevodstvo
- Polesie Voevodstvo (the whole territory) 1919 - 1939
- the town of Brest 1919 - 1939
Povets:
- Brest Povet:
part 1 - the whole territory 1918 - 1939
part 2 - gminas (letters B - K) 1921 - 1939
part 3 - gminas (letters L - M) 1921 - 1939
part 4 - gminas (letters O - T) 1921 - 1939
part 5 - gminas (letters V - Zh) 1921 - 1939 - Drogichin Povet 1920 - 1939
- Kamen-Kashirski Povet 1921 - 1939
- Kobrin Povet 1920 - 1939
- Kossovo Povet 1920 - 1939
- Luninets Povet 1918 - 1939
- Pinsk Povet:
part 1 - the whole territory 1918 - 1939
part 2 - the town of Pinsk 1919 - 1940
part 3 - gminas (letters B - L) 1918 - 1939
part 4 - gminas (letters Ì - Zh) 1921 - 1937 - Pruzhany Povet 1920 - 1940
- Sarno Povet 1922 - 1929
- Stolin Povet 1922 - 1939
Volyn Voevodstvo
- Sarno Povet 1930 - 1939
Brest Region (Oblast) 1939 - 1941, see below
Baranovichi Okrug*
- Baranovichi Okrug (the whole territory) 1941 - 1944
- the town of Baranovichi June 1941 - January 1944
Districts (raions):
- Liakhovichi District July - November 1941
- Novaia Mysh District 1941 - 1944
Brest Okrug*
- Brest Okrug (the whole territory) March 1943 - July 1944
- the town of Brest 1941 - 1944
Districts (raions):
- Antopol District 1941 - 1944
- Bereza District 1941 - 1944
- Brest District 1941 - 1944
- Domachevo District 1941 - 1944
- Kamenets District 1941 - 1944
- Kossovo District 1941 - 1944
- Malorita District 1941 - 1944
- Pruzhany District 1941 - 1944
- Ruzhany District 1941 - 1944
- Shereshevo District 1941 - 1944
- Vysokoe District 1944
- Zhabinka District 1941 - 1944
Pinsk Okrug*
- Pinsk Okrug (the whole territory) 1941 - 1944
- the town of Pinsk 1941 - 1944
Districts:
- Drogichin District 1941 - 1943
- Ivanovo District 1941 - 1943
- Luninets District 1941 - 1944
- Pinsk District 1942 - 1943
- Stolin District 1942 - 1943
- Telekhany District 1943
- Zhabchitsy District 1941 - 1943
Brest Region
- Brest Region (the whole territory) 1941 - 1987
- the town of Brest 1939 - 1941, 1944 - 1956
Districts (raions):
- Bereza District 1944 - 1945
- Brest District 1940, 1947 - 1966
- Domachevo District 1944, 1947 - 1950
- Kamenets District 1944 - 1971
- Kobrin District 1939 - 1941
- Malorita District 1944 - 1950, 1975
- Pinsk District (the town of Pinsk) 1940 - 1941
- Zhabinka District 1947 - 1952, 1954, 1965 - 1968
Note: *The administrative division of Belarus during the German Occupation