part i item 1 . business our company founded in 1886 , american water works company , inc. , ( the 201ccompany , 201d 201camerican water 201d or 201caww 201d ) is a delaware holding company . american water is the most geographically diversified , as well as the largest publicly-traded , united states water and wastewater utility company , as measured by both operating revenues and population served . as a holding company , we conduct substantially all of our business operations through our subsidiaries . our approximately 6400 employees provide an estimated 15 million people with drinking water , wastewater and/or other water-related services in 47 states and one canadian province . operating segments we report our results of operations in two operating segments : the regulated businesses and the market- based operations . additional information with respect to our operating segment results is included in the section entitled 201citem 7 2014management 2019s discussion and analysis of financial condition and results of operations , 201d and note 18 of the consolidated financial statements . regulated businesses our primary business involves the ownership of subsidiaries that provide water and wastewater utility services to residential , commercial , industrial and other customers , including sale for resale and public authority customers . we report the results of this business in our regulated businesses segment . our subsidiaries that provide these services are generally subject to economic regulation by certain state commissions or other entities engaged in economic regulation , hereafter referred to as public utility commissions , or 201cpucs , 201d of the states in which we operate . the federal and state governments also regulate environmental , health and safety , and water quality matters . our regulated businesses segment operating revenues were $ 2674.3 million for 2014 , $ 2539.9 for 2013 , $ 2564.4 million for 2012 , accounting for 88.8% ( 88.8 % ) , 90.1% ( 90.1 % ) and 89.9% ( 89.9 % ) , respectively , of total operating revenues for the same periods . the following table sets forth our regulated businesses operating revenues , number of customers and an estimate of population served as of december 31 , 2014 : operating revenues ( in millions ) % (  % ) of total number of customers % (  % ) of total estimated population served ( in millions ) % (  % ) of total .

operatingrevenues ( in millions ) $ 652.3: pennsylvania: 605.4
missouri: 270.2
illinois ( a ): 262.3
california: 209.8
indiana: 200.6
west virginia ( b ): 127
subtotal ( top seven states ): 2327.6
other ( c ): 346.7
total regulated businesses: 2674.3
% (  % ) of total 24.5% ( 24.5 % ): pennsylvania: -22.6
missouri: -10.1
illinois ( a ): -9.8
california: -7.8
indiana: -7.5
west virginia ( b ): -4.7
subtotal ( top seven states ): -87
other ( c ): -13
total regulated businesses: -100
number ofcustomers 648066: pennsylvania: 666415
missouri: 464498
illinois ( a ): 312017
california: 174198
indiana: 293666
west virginia ( b ): 170371
subtotal ( top seven states ): 2729231
other ( c ): 489961
total regulated businesses: 3219192
% (  % ) of total 20.2% ( 20.2 % ): pennsylvania: -20.7
missouri: -14.4
illinois ( a ): -9.7
california: -5.4
indiana: -9.1
west virginia ( b ): -5.3
subtotal ( top seven states ): -84.8
other ( c ): -15.2
total regulated businesses: -100
estimatedpopulationserved ( in millions ) 2.7: pennsylvania: 2.2
missouri: 1.5
illinois ( a ): 1.3
california: 0.6
indiana: 1.2
west virginia ( b ): 0.6
subtotal ( top seven states ): 10.1
other ( c ): 1.8
total regulated businesses: 11.9
% (  % ) of total 22.7% ( 22.7 % ): pennsylvania: -18.5
missouri: -12.7
illinois ( a ): -10.9
california: -5
indiana: -10.1
west virginia ( b ): -5
subtotal ( top seven states ): -84.9
other ( c ): -15.1
total regulated businesses: -100

( a ) includes illinois-american water company , which we refer to as ilawc and american lake water company , also a regulated subsidiary in illinois. .

Questions:
as of december 31, 2014, what was the total estimated population served?
and how much was the total number of customers as a percentage of this total amount?
and what was this percentage representation only for the pennsylvania market area, in that same date?

Answers:
11900000
27%
30%