In Ruby trying to use .each do on a given hash

This is what I am attempting to do:

Write a method that takes the hash and prints if city is large (more than 100,000) or small (otherwise). Printing something like: Vancouver is a large city.

Here is my provided hash:

bc_cities_population = {vancouver: 2135201, victoria:  316327, abbotsford: 149855, kelowna: 141767, nanaimo:  88799, white_rock: 82368, kamloops: 73472, chilliwack: 66382 }

Here is my code:

bc_cities_population = {vancouver: 2135201, victoria:  316327, abbotsford: 149855, kelowna: 141767, nanaimo:  88799, white_rock: 82368, kamloops: 73472, chilliwack: 66382 }

bc_cities_population.each do |city, population|  
if population > 100,000
  puts "#{city} is a big ol city!"
elsif 
  puts "#{city}city is a tiny ol town"
  end
end

Thanks for your help..

Edit: Here is the error I am receiving..

 ruby big_small_city.rb
big_small_city.rb:1: syntax error, unexpected tINTEGER, expecting keyword_do or '{' or '('
...er: 2135201, victoria:  316327, abbotsford: 149855, kelowna...

Edit2:

this is my revised code which i am still unsure why is not working..

bc_cities_population = {vancouver: 2135201, victoria:  316327, abbotsford: 149855, kelowna: 141767, nanaimo:  88799, white_rock: 82368, kamloops: 73472, chilliwack: 66382 }

bc_cities_population.each do |city, population|  
  if population > 100_000
    puts "#{city} is a big ol city!"
  else
    puts "#{city} is a tiny ol town"
  end
end