Please answer the given financial question based on the context.
Context: 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 .
|new jersey|operatingrevenues ( in millions ) $ 652.3|% (  % ) of total 24.5% ( 24.5 % )|number ofcustomers 648066|% (  % ) of total 20.2% ( 20.2 % )|estimatedpopulationserved ( in millions ) 2.7|% (  % ) of total 22.7% ( 22.7 % )|
|pennsylvania|605.4|22.6% ( 22.6 % )|666415|20.7% ( 20.7 % )|2.2|18.5% ( 18.5 % )|
|missouri|270.2|10.1% ( 10.1 % )|464498|14.4% ( 14.4 % )|1.5|12.7% ( 12.7 % )|
|illinois ( a )|262.3|9.8% ( 9.8 % )|312017|9.7% ( 9.7 % )|1.3|10.9% ( 10.9 % )|
|california|209.8|7.8% ( 7.8 % )|174198|5.4% ( 5.4 % )|0.6|5.0% ( 5.0 % )|
|indiana|200.6|7.5% ( 7.5 % )|293666|9.1% ( 9.1 % )|1.2|10.1% ( 10.1 % )|
|west virginia ( b )|127.0|4.7% ( 4.7 % )|170371|5.3% ( 5.3 % )|0.6|5.0% ( 5.0 % )|
|subtotal ( top seven states )|2327.6|87.0% ( 87.0 % )|2729231|84.8% ( 84.8 % )|10.1|84.9% ( 84.9 % )|
|other ( c )|346.7|13.0% ( 13.0 % )|489961|15.2% ( 15.2 % )|1.8|15.1% ( 15.1 % )|
|total regulated businesses|$ 2674.3|100.0% ( 100.0 % )|3219192|100.0% ( 100.0 % )|11.9|100.0% ( 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. .
Question: what is the approximate customer penetration in the pennsylvania market area?
Answer:
0.30292