what is approximate customer penetration percentage in the total regulated businesses?
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) | % of Total | Number ofCustomers | % of Total | EstimatedPopulationServed(In millions) | % of Total |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| New Jersey | $652.3 | 24.5% | 648,066 | 20.2% | 2.7 | 22.7% |
| Pennsylvania | 605.4 | 22.6% | 666,415 | 20.7% | 2.2 | 18.5% |
| Missouri | 270.2 | 10.1% | 464,498 | 14.4% | 1.5 | 12.7% |
| Illinois (a) | 262.3 | 9.8% | 312,017 | 9.7% | 1.3 | 10.9% |
| California | 209.8 | 7.8% | 174,198 | 5.4% | 0.6 | 5.0% |
| Indiana | 200.6 | 7.5% | 293,666 | 9.1% | 1.2 | 10.1% |
| West Virginia (b) | 127.0 | 4.7% | 170,371 | 5.3% | 0.6 | 5.0% |
| Subtotal (Top Seven States) | 2,327.6 | 87.0% | 2,729,231 | 84.8% | 10.1 | 84.9% |
| Other (c) | 346.7 | 13.0% | 489,961 | 15.2% | 1.8 | 15.1% |
| Total Regulated Businesses | $2,674.3 | 100.0% | 3,219,192 | 100.0% | 11.9 | 100.0% |

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

a = 11.9 * 1000000
b = 3219192 / a * 100