The congregation in Zug was Roman Catholic.
A wooden church was constructed there in the Kontor style.
Zug was founded on 10 August 1767 as a Roman Catholic colony by Baron Caneau de Beauregard. It was moved to a new location in 1770.
| 
			 Year 
			 | 
			
			 Households 
			 | 
			
			 Population 
			 | 
		||
|---|---|---|---|---|
| 
			 Total 
			 | 
			
			 Male 
			 | 
			
			 Female 
			 | 
		||
| 1767 | 
			 | 
			
			 | 
			
			 | 
			
			 | 
		
| 1769 | 
			 43 
			 | 
			
			 133 
			 | 
			
			 69 
			 | 
			
			 64 
			 | 
		
| 1773 | 
			 43 
			 | 
			
			 157 
			 | 
			
			 84 
			 | 
			
			 73 
			 | 
		
| 1788 | 
			 37 
			 | 
			
			 196 
			 | 
			
			 99 
			 | 
			
			 97 
			 | 
		
| 1798 | 
			 40 
			 | 
			
			 238 
			 | 
			
			 125 
			 | 
			
			 119 
			 | 
		
| 1816 | 
			 66 
			 | 
			
			 415 
			 | 
			
			 215 
			 | 
			
			 200 
			 | 
		
| 1834 | 
			 106 
			 | 
			
			 783 
			 | 
			
			 406 
			 | 
			
			 377 
			 | 
		
| 1850 | 
			 150 
			 | 
			
			 1,357 
			 | 
			
			 675 
			 | 
			
			 682 
			 | 
		
| 1857 | 
			 195 
			 | 
			
			 1,420 
			 | 
			
			 714 
			 | 
			
			 706 
			 | 
		
| 1859 | 
			 | 
			
			 1,339 
			 | 
			
			 | 
			
			 | 
		
| 1883 | 
			 | 
			
			 1,996 
			 | 
			
			 | 
			
			 | 
		
| 1889 | 
			 | 
			
			 2,127 
			 | 
			
			 | 
			
			 | 
		
| 1897 | 
			 | 
			
			 2,415** 
			 | 
			
			 1,212 
			 | 
			
			 1,203 
			 | 
		
| 1905 | 
			 | 
			
			 2,975 
			 | 
			
			 | 
			
			 | 
		
| 1910 | 
			 448 
			 | 
			
			 3,216 
			 | 
			
			 1,645 
			 | 
			
			 1,571 
			 | 
		
| 1912 | 
			 | 
			
			 3,606 
			 | 
			
			 | 
			
			 | 
		
| 1920 | 
			 526 
			 | 
			
			 3,634 
			 | 
			
			 | 
			
			 | 
		
| 1922 | 
			 | 
			
			 1,958 
			 | 
			
			 | 
			
			 | 
		
| 1923 | 
			 | 
			
			 2,247 
			 | 
			
			 | 
			
			 | 
		
| 1926 | 
			 469 
			 | 
			
			 2,435*** 
			 | 
			
			 1,187 
			 | 
			
			 1,248 
			 | 
		
| 1931 | 
			 | 
			
			 2,813**** 
			 | 
			
			 | 
			
			 | 
		
*Of whom 2,405 were German.
**Of whom 2,433 (1,185 male & 1,248 female) were German living in 467 households.
***Of whom 2,433 were German.
****Of whom 2,803 were German.
Catholic
Censuses for Zug are available for the following years: 1798, 1834, & 1857.
Beratz, Gottieb. The German colonies on the Lower Volga, their origin and early development: a memorial for the 150th anniversary of the arrival of the first German settlers on the Volga, 29 June 1764 . Translated by Adam Giesinger (Lincoln, NE: American Historical Society of Germans from Russia, 1991): 353.
Diesendorf, V.F. Die Deutschen Russlands : Siedlungen und Siedlungsgebiete : Lexicon. Moscow, 2006.
Pallas, P.S. Reise durch verschiedene Provinzen des Russischen Reichs. Theil 3,2, Reise aus Sibirien zurueck an die Wolga im 1773sten Jahr (St. Petersburg: Kaiserl. Academie der Wissenschaften, 1776): 614.
Preliminary Results of the Soviet Census of 1926 on the Volga German Autonomous Soviet Socialist Republic (Pokrovsk, 1927): 28-83.
Report of Conditions of Settlements on the Volga to Catherine II by Count Orlov, 14 February 1769.
Schnurr, Joseph. Die Kirchen und das religiöse Leben der Russlanddeutschen - Katholischer Teil (Stuttgart: Selbstverlag Joseph Schnurr, 1980).
"Settlements in the 1897 Census." Journal of the American Historical Society of Germans from Russia (Winter, 1990): 17.
Gattung (Wolgadeutsche.net) - in Russian