* Route 30: This is the earliest location you can encounter Spearow.
* Route 31: You can also find it here.
* Route 36: This is another location where Spearow can be encountered.
* Route 40: Spearow can be found here as well.
* Route 42: It appears in this route too.
* Route 43: This route also has Spearow.
* Route 44: You can encounter Spearow in this route.
* Route 45: Spearow is present here too.
* Route 46: Spearow can be found in this route.
It's important to note that Spearow is a common Pokémon, so you should have no trouble finding it in the wild.