Originally the congregation in Reinhard was part of the Rosenheim parish which had been established in 1767.
Reinhard was founded on 15 July 1766 by LeRoy & Pictet as a Lutheran colony. By a Decree dated 26 February 1768, it was given the official Russian name of Osinovka.
| 
			 Year 
			 | 
			
			 Households 
			 | 
			
			 Population 
			 | 
		||
|---|---|---|---|---|
| 
			 Total 
			 | 
			
			 Male 
			 | 
			
			 Female 
			 | 
		||
| 1767 | 
			 33 
			 | 
			
			 89 
			 | 
			
			 | 
			
			 | 
		
| 1769 | 
			 30 
			 | 
			
			 94 
			 | 
			
			 48 
			 | 
			
			 46 
			 | 
		
| 1773 | 
			 30 
			 | 
			
			 100 
			 | 
			
			 49 
			 | 
			
			 51 
			 | 
		
| 1788 | 
			 20 
			 | 
			
			 116 
			 | 
			
			 62 
			 | 
			
			 54 
			 | 
		
| 1798 | 
			 27 
			 | 
			
			 162 
			 | 
			
			 91 
			 | 
			
			 71 
			 | 
		
| 1816 | 
			 31 
			 | 
			
			 291 
			 | 
			
			 154 
			 | 
			
			 137 
			 | 
		
| 1834 | 
			 67 
			 | 
			
			 578 
			 | 
			
			 295 
			 | 
			
			 283 
			 | 
		
| 1850 | 
			 91 
			 | 
			
			 641 
			 | 
			
			 326 
			 | 
			
			 315 
			 | 
		
| 1857 | 
			 87 
			 | 
			
			 796 
			 | 
			
			 427 
			 | 
			
			 369 
			 | 
		
| 1859 | 
			 | 
			
			 828 
			 | 
			
			 | 
			
			 | 
		
| 1889 | 
			 | 
			
			 1,348 
			 | 
			
			 | 
			
			 | 
		
| 1897 | 
			 | 
			
			 1,301* 
			 | 
			
			 672 
			 | 
			
			 629 
			 | 
		
| 1905 | 
			 | 
			
			 2,038 
			 | 
			
			 | 
			
			 | 
		
| 1910 | 
			 218 
			 | 
			
			 2,135 
			 | 
			
			 1,080 
			 | 
			
			 1,055 
			 | 
		
| 1912 | 
			 | 
			
			 2,182 
			 | 
			
			 | 
			
			 | 
		
| 1920 | 
			 241 
			 | 
			
			 1,437 
			 | 
			
			 | 
			
			 | 
		
| 1922 | 
			 | 
			
			 825 
			 | 
			
			 | 
			
			 | 
		
| 1926** | 
			 178 
			 | 
			
			 853 
			 | 
			
			 402 
			 | 
			
			 451 
			 | 
		
| 1931 | 
			 | 
			
			 1,085*** 
			 | 
			
			 | 
			
			 | 
		
*Of whom 1,290 were German.
**Of those 844 (399 male & 445 female) were German living in 174 households.
***Of whom 1,062 were German.
Lutheran
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): 352.
Diesendorf, V.F. Die Deutschen Russlands : Siedlungen und Siedlungsgebiete : Lexicon. Moscow, 2006.
Klaus, A. Our Colony [in Russian] (St. Petersburg, 1869): 2:14 & 4:56-57.
List of Populated Areas of the Samara Province [in Russian] (Samara, 1910): 379.
Orlov, Gregorii. Report of Conditions of Settlements on the Volga to Catherine II , 14 February 1769.
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): 612.
Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 4 (Göttingen: Göttinger Arbeitskreis, 2008): 11, 19-28.
Pleve, Igor R. The German Colonies on the Volga: The Second Half of the Eighteenth Century , translated by Richard Rye (Lincoln, NE: American Historical Society of Germans from Russia, 2001): 318.
Preliminary Results of the All-Union Census of 1926 and ASSR Volga Germans (Pokrovsk, 1927): 28-83.
Schnurr, Joseph. Die Kirchen und das religiöse Leben der Russlanddeutschen  Evangelischer Teil (Stuttgart: AER Verlag Landsmannschaft der Deutschen aus Rußland, 1978): 196.
"Settlements in the 1897 Census." Journal of the American Historical Society of Germans from Russia (Winter, 1990): 17.
Reinhard (wolgadeutsche.net) - in Russian