Yes, I misread. My source was for the province of Estonia. Nontheless, 280K is still more than twice than the 162K in VIP currently. 485K in 1782 and 750K by 1860 makes a population in 1836 of something around 668K. I'll modify the POP file using these numbers as a base.
Edit: I'm currently modding the POP file, numbers are as follows:
Total POP in Reval/Narva/Pärnau/Dorpat: 668K at game start.
89.2% Estonian
5.4% North German
3.6% Russian
1.8% Swedish
Numbers for individual provinces:
Reval 219K
Narva 175K
Pärnau 112K
Dorpat 160K
Edit2: Finished. I also learned that there has to be an empty line at the end of each POP file, otherwise the last POP won't be loaded. Something to keep in mind for VIP 0.5
Code:
Province;Nationality;Religion;Workforce;Ideology;Consciousness;Militancy;Size
386;North_German;Protestant;aristocrats;;;;1
386;Estonian;Protestant;clergymen;;;;1
386;Estonian;Protestant;farmers;;;;21
386;Estonian;Protestant;farmers;;;;20
386;Russian;Orthodox;soldiers;;;;1
387;North_German;Protestant;aristocrats;;;;1
387;North_German;Protestant;officers;;;;1
387;North_German;Protestant;farmers;;;;4
387;Estonian;Protestant;clergymen;;;;1
387;Estonian;Protestant;farmers;;;;24
387;Estonian;Protestant;farmers;;;;20
387;Swedish;Protestant;farmers;;;;3
387;Russian;Orthodox;soldiers;;;;1
388;Estonian;Protestant;farmers;;;;14
388;Estonian;Protestant;farmers;;;;14
441;North_German;Protestant;aristocrats;;;;1
441;North_German;Protestant;farmers;;;;1
441;Estonian;Protestant;farmers;;;;17
441;Estonian;Protestant;farmers;;;;17
441;Russian;Orthodox;soldiers;;;;1
441;Russian;Orthodox;farmers;;;;3