According to the 1910 population census, the absolute majority in the district was held by Orthodox Serbs - 76.07%.

1991

In the census of 1991, the municipality of Bosanski Novi / Novi Grad had 41,541 residents, including:

• 25,106 Serbs (60.44%) (See: Serbs of Bosnia and Herzegovina)
• 14,083 Muslims by nationality (Bosniaks) (33.90%)
• 1,531 Yugoslavs (3.69%)
• 402 Croats (0.97%) (See: Croats of Bosnia and Herzegovina)
• 419 others (1.01%)

The town of Bosanski Novi (official name at that time) itself had 13,500 inhabitants, including:

• 51% Muslims by nationality (Bosniaks)
• 38% Serbs
• 8% Yugoslavs
• 1% Croats
• 2% others

2006

In 2006, the majority of inhabitants of municipality were ethnic Serbs.