I was incorrect, editing the png picture file is required. What a weird setup.

For anybody wanting to quickly fix pennsylvania with minor edits:
use paint, draw a 1pixel line from ocean to the dark red province here:
map_data/provinces.png That makes that dark red province "coastal" and it can build ports.

optional probably:
add port = "xB00000" and naval_exit_id = 3067
to STATE_PENNSYLVANIA = {
in map_data/state_regions/05_north_america.txt

Probably just adding port = "xB00000" and naval_exit_id = 3067
is enough to make pennsylvania have a port.
Definitely didn't need to override the entire north america file.

This mod was an awesome idea but is now very outdated, using it now reverts all sorts of map data to 2022 numbers, including changing arable_land sizes for many parts of the US.

update from March 2024, this mod breaks the Appalachian Coal Fields bonus in PA, OH, WV, and KY

Go Birds and Go Phils! (And Flyers, Sixers, and Union). Thank you for building this!

Go birds

phillyphillyphillyphilly!

philly wooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo

Port of Philadelphia is included in Victoria III Improvement Collection 維多利亞三世改進系列 (V1.1.0 12/26/22). With 88 working mods. I provide you with the order list you just copy and paste, No sorting manual work needed, enjoy!
https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2882898702

Lets gooo philly

This is great. I would love to see more mods like this one, as I'm really disappointed in the state modifiers and port locations. Many are missing, and often the ones that do exist are overzealous, such as Virginia getting the Appalachian Mountains decrease in infrastructure when only a tiny corner of the state is in the mountains. I wish the modifier was more like increased infrastructure usage of mining buildings and urban buildings were excluded. But then in West Virginia it makes sense that all buildings need more infrastructure because the whole state is mountains. No major urban center can directly route towards other major urban centers. Honestly I want the penalty to be higher in this case. Or back to ports, where is Texas's port modifier. Half the coast is good deep water harbors. Galveston was rivaling New Orleans in this era...speaking of which, where is Louisiana's port modifier? It's only where one of the world's largest navigable river systems meets the world's oceans.

as a pennsylvanian, thank you for this. pennsylvania had a port in vicky 2!

Thank you for this fix.. redic that they don't have access to sea. when we do from Philly.