That disconnect can be on the same pole as the meter- but the disconnecting means for the home must be within 30 feet of the exterior wall of the home served. You could have four homes served by one pole with four meters/service disconnects - but most likely the pole would need to be in a central location and all four homes must be within 30 feet of it. More then four homes likely puts them too close together for fire or other zoning codes.
What I meant was both the meter and service equipment on the same pole. It is common practice here to have an overhead service with the meter and main disconnect on the same pole. Of course these are right next to the mobile home and an additional disconnect is not required. It is usually like this...
Service equipment/main panel nippled to the bottom of meter
Feed out from the bottom or side of main panel
Then under & up into the panel inside the mobile home
This would be for a single mobile home, not a park or group of mobile homes. I'm not sure what the OPs setup is though.