 The median age in Sarnia is 44 @.@ 5 which is older than the Canadian median of 40 @.@ 95 , indicative of Sarnia 's aging population . According to the 2011 Census , Sarnia is predominately Christian as 28 @.@ 46 % of the population were Catholic , 12 @.@ 4 % were members of the United Church of Canada , 7 @.@ 3 % were Anglican , and 20 @.@ 06 % were of other Christian faiths , Muslim , or Jewish ; 28 @.@ 38 % professed no religious preference or were atheists . The median income counting all persons 15 years old or older in Sarnia in 2010 was $ 29 @,@ 196 , while median family income was $ 76 @,@ 523 , both of which were slightly lower than Ontario 's , at $ 30 @,@ 526 and $ 80 @,@ 987 , respectively . The cost of living in Sarnia , however , is significantly lower than it is in Ontario as a whole . The median value of a dwelling , for instance , is $ 179 @,@ 266 , compared to the $ 300 @,@ 862 of Ontario as a whole . 
 The median age in Sarnia <a href='drop_aux' title='1'><mark>is</mark></a>44 @.@ 5 which <a href='drop_aux' title='2'><mark>is</mark></a>older than the Canadian median of 40 @.@ 95 , indicative of Sarnia <a href='null_genetive' title='3'><mark>'s</mark></a>aging population . According to the 2011 Census , Sarnia is predominately Christian as 28 @.@ 46 % of the population <a href='uninflect' title='4'><mark>were</mark></a> Catholic , 12 @.@ 4 % <a href='uninflect' title='5'><mark>were</mark></a> members of the United Church of Canada , 7 @.@ 3 % <a href='uninflect' title='6'><mark>were</mark></a> Anglican , and 20 @.@ 06 % <a href='uninflect' title='7'><mark>were</mark></a> of other Christian faiths , Muslim , or Jewish ; 28 @.@ 38 % professed no religious preference or <a href='uninflect' title='8'><mark>were</mark></a> atheists . The median income counting all persons 15 years old or older in Sarnia in 2010 was $ 29 @,@ 196 , while median family income was $ 76 @,@ 523 , both of which <a href='uninflect' title='9'><mark>were</mark></a> slightly lower than Ontario <a href='null_genetive' title='10'><mark>'s</mark></a>, at $ 30 @,@ 526 and $ 80 @,@ 987 , respectively . The cost of living in Sarnia , however , <a href='drop_aux' title='11'><mark>is</mark></a>significantly lower than it is in Ontario as a whole . The median value of a dwelling , for instance , <a href='drop_aux' title='12'><mark>is</mark></a>$ 179 @,@ 266 , compared to the $ 300 @,@ 862 of Ontario as a whole . 
The median age in Sarnia 44 @.@ 5 which older than the Canadian median of 40 @.@ 95 , indicative of Sarnia  aging population . According to the 2011 Census , Sarnia is predominately Christian as 28 @.@ 46 % of da population was Catholic , 12 @.@ 4 % was members of the United Church of Canada , 7 @.@ 3 % was Anglican , and 20 @.@ 06 % was of other Christian faiths , Muslim , or Jewish ; 28 @.@ 38 % professed no religious preference or was atheists . Tdamedian income countin all persons 15 yrs old or older in Sarnia in 2010 was $ 29 @,@ 196 , while median fam income was $ 76 @,@ 523 , both of which was slightly lower den Ontario  , at $ 30 @,@ 526 and $ 80 @,@ 987 , respectively . The cost of living in Sarnia , however , significantly lower tdenit is in Ontario as a whole . Thdaedian value of a dwelling , for instance , $ 179 @,@ 266 , compared to the $ 300 @,@ 862 of Ontario as a whole .