CONTRIBUTION TO STATE ECONOMIES 
All states and the District of Columbia use special systems to guarantee that auto insurance is available to those who cannot obtain it in the private market. Each type of system is commonly known as an assigned risk plan, although the term technically applies to only one type of plan. The assigned risk and other plans are known in the insurance industry as the shared, or residual, market. Policyholders in assigned risk plans are, as the name suggests, assigned to various insurance companies doing business in the state. Hence the term voluntary (regular) market, where auto insurers are free to select policyholders rather than have them assigned. The chart below shows the number of vehicles insured by state, including those in the voluntary and residual markets.
PRIVATE PASSENGER CARS INSURED
IN THE SHARED AND VOLUNTARY MARKETS, 2006



State

Voluntary

Shared market

Total

Shared market as a percent of total
Alabama3,223,439563,223,4950.002%
Alaska412,301582412,8830.141
Arizona3,879,3401243,879,4640.003
Arkansas1,985,321111,985,3320.001
California22,736,66318,36422,755,0270.081
Colorado3,437,55643,437,560(1)
Connecticut2,398,9061,7772,400,6830.074
Delaware599,916216600,1320.036
D.C.218,8321,082219,9140.492
Florida11,290,2314611,290,277(1)
Georgia6,620,325126,620,337(1)
Hawaii771,4194,973776,3920.641
Idaho1,262,950901,263,0400.007
Illinois7,669,0722,2567,671,3280.029
Indiana4,322,560224,322,5820.001
Iowa2,356,750302,356,7800.001
Kansas2,268,2931,9992,270,2920.088
Kentucky2,924,6885832,925,2710.020
Louisiana2,728,135(44)2,728,091-0.002
Maine1,030,2501971,030,4470.019
Maryland3,704,43683,9313,788,3672.215
Massachusetts3,955,971198,6444,154,6154.781
Michigan6,287,3372,2316,289,5680.035
Minnesota3,639,668(8)3,639,660(1)
Mississippi1,810,8632011,811,0640.011
Missouri4,029,002954,029,0970.002
Montana760,258435760,6930.057
Nebraska1,453,435111,453,4460.001
Nevada1,704,944361,704,9800.002
New Hampshire877,2371,372878,6090.156
New Jersey5,105,64143,2485,148,8890.840
New Mexico1,360,6491281,360,7770.009
New York9,030,086153,2419,183,3271.669
North Carolina5,229,3671,583,4756,812,84223.243
North Dakota574,0370574,037(1)
Ohio7,939,16707,939,167(1)
Oklahoma2,621,0741792,621,2530.007
Oregon2,639,391122,639,403(1)
Pennsylvania8,377,86136,5068,414,3670.434
Rhode Island648,89226,429675,3213.914
South Carolina3,132,14723,132,149(1)
South Dakota650,544(1)650,543(1)
Tennessee4,095,199634,095,2620.002
TexasNANANANA
Utah1,691,73071,691,737(1)
Vermont468,8471,169470,0160.249
Virginia5,893,0974,6045,897,7010.078
Washington4,318,15704,318,157(1)
West Virginia1,261,5442241,261,7680.018
Wisconsin3,599,727(2)3,599,725(1)
Wyoming473,6134473,6170.001
United States179,470,8682,168,616181,639,4841.194%
(1) Less than 0.001 percent.

NA=Data not available.

Source: Automobile Insurance Plans Service Office.
  • In 2006 (latest data available), 1.2 percent of vehicles were insured in the shared market, compared with 2.9 percent in 1996.

  • The number of vehicles in the shared market nationwide fell 7.5 percent in 2006.

  • North Carolina has the highest percentage of cars in the shared market, 23 percent, followed by Massachusetts with 5 percent and Rhode Island with 4 percent.

  • While North Carolina, Massachusetts and New York have the most vehicles in shared market plans, the number of cars fell in 2006 by 28.3 percent in New York's plan and 19.5 percent in Massachusetts' plan. The number of cars in North Carolina’s plan rose 2.4 percent from 2005 to 2006.

AUTO: COSTS/EXPENDITURES

The average cost of automobile insurance declined by 1.3 percent in 2005, according to a September 2007 report from the National Association of Insurance Commissioners (NAIC). New Jersey had the highest average expenditure ($1,184), followed by the District of Columbia ($1,182), New York ($1,122), Massachusetts ($1,113) and Louisiana ($1,076).
AVERAGE EXPENDITURES FOR AUTO INSURANCE,
UNITED STATES, 1996-2005



Year

Average expenditure

Percent change

Year

Average expenditure

Percent change
1996$6913.4%2001$7265.2%
19977052.020027817.6
1998703-0.320038245.5
1999685-2.620048401.9
20006900.72005829-1.3
Source: © 2007 National Association of Insurance Commissioners.
  • 77 percent of insured drivers purchase comprehensive coverage in addition to liability insurance, and 72 percent buy collision coverage, according to NAIC data.

AUTO INSURANCE EXPENDITURES, BY STATE

The table on the following pages shows estimated average expenditures for private passenger automobile insurance by state for 2001 to 2005, providing approximate measures of the relative cost of automobile insurance to consumers in each state. To calculate average expenditures the National Association of Insurance Commissioners (NAIC) assumes that all insured vehicles carry liability coverage but not necessarily collision or comprehensive coverage. The average expenditure measures what consumers actually spend for insurance on each vehicle. It does not equal the sum of liability, collision and comprehensive expenditures because not all policyholders purchase all three coverages.

Expenditures are affected by the coverages purchased as well as other factors. In states where the economy is healthy, people are more likely to purchase new cars. Since new car owners are more likely to purchase physical damage coverages, these states will have a higher average expenditure. The NAIC notes that urban population, traffic density and per capita income have a significant impact on premiums. The latest report shows that high premium states tend also to be highly urban, with higher wage and price levels and greater traffic density. Tort liability and other auto laws, labor costs, liability coverage requirements, theft rates and other factors can also affect auto insurance prices.
AVERAGE EXPENDITURES FOR AUTO INSURANCE BY STATE, 2004-2005


 

2005

2004

 

State

Liability

Collision

Compre-
hensive

Average expenditure

Rank (1)

Average expenditure

Rank (1)

Average expenditure   percent change  2004-2005
Alabama$367$316$134$67837$677390.1%
Alaska5963901659621197411-1.2
Arizona5113102429261493114-0.5
Arkansas3912971656933470832-2.0
California (2) 4873651178451884717-0.3
Colorado4713041988272185016-2.6
Connecticut626343127991999190.0
Delaware7132941131,02881,02280.6
D.C.6274462701,18221,1852-0.2
Florida7572801111,06361,06260.1
Georgia42037216878424779240.6
Hawaii54729811484319817223.1
Idaho3392361335834859048-1.2
Illinois4103001217432876026-2.3
Indiana3722661206574167140-2.0
Iowa2902051695555058050-4.3
Kansas3012442055904760346-2.2
Kentucky4892721377502675827-1.1
Louisiana6653582081,07651,06251.3
Maine3682731116444265042-0.9
Maryland5563311499451294712-0.3
Massachusetts7243391391,11341,11340.0
Michigan4874361669311398010-5.1
Minnesota4602371907912382921-4.6
Mississippi4193041717452774929-0.6
Missouri3812711526853570233-2.4
Montana40925020768536683370.3
Nebraska3372262086214463743-2.6
Nevada63633614698310939134.7
New Hampshire4313051147922279823-0.8
New Jersey7514031831,184112211-3.1
New Mexico44929316772730728300.0
New York7653381591,12231,1723-4.2
North Carolina33626912560246597470.9
North Dakota2592092545545156251-1.4
Ohio3902551106693968038-1.6
Oklahoma3952771746783869036-1.8
Oregon4842351107372975328-2.2
Pennsylvania50831613184916843190.8
Rhode Island7143801301,05971,03472.4
South Carolina4712531517532576325-1.4
South Dakota2982112145654958749-3.7
Tennessee3632981266594066641-1.1
Texas (3)4763151558451784718-0.2
Utah4272701227063172231-2.3
Vermont36830613469932693350.9
Virginia3982711276983370234-0.6
Washington54126513284020839200.2
West Virginia5323031938571587515-2.1
Wisconsin3392151336154563644-3.2
Wyoming33626322463943629451.6
United States$496$309$143$829$840-1.3%
(1) Ranked by average expenditure.
(2) Preliminary.
(3) Due to the exclusion of county mutuals, which had 44 percent of the market in 2005, Texas results are not comparable with results from other states.

Note: Average expenditure=Total written premium/liability car years. A car-year is equal to 365 days of insured coverage for a single vehicle. The NAIC does not rank state average expenditures and does not endorse any conclusion drawn from these data.

Source: © 2007 National Association of Insurance Commissioners.
AVERAGE EXPENDITURES FOR AUTO INSURANCE BY STATE, 2001-2003


 

Average expenditure (1)

State

2003

2002

2001
Alabama$657$627$605
Alaska938884826
Arizona921887822
Arkansas698672621
California (2)837778723
Colorado923921808
Connecticut988970912
Delaware977900851
D.C.1,1351,0441,012
Florida1,018934850
Georgia759739703
Hawaii776739705
Idaho586563523
Illinois762729683
Indiana671648615
Iowa581548513
Kansas611587556
Kentucky739688645
Louisiana1,015928839
Maine633587546
Maryland893840784
Massachusetts1,052984936
Michigan950887735
Minnesota837801735
Mississippi710681638
Missouri702669634
Montana675628572
Nebraska624590554
Nevada914896851
New Hampshire779733686
New Jersey1,1931,1251,028
New Mexico732706662
New York1,1681,1001,015
North Carolina605588565
North Dakota537505498
Ohio672642614
Oklahoma689654610
Oregon736682643
Pennsylvania813777726
Rhode Island997939880
South Carolina745703636
South Dakota564542510
Tennessee650632611
Texas (3)837791735
Utah733703640
Vermont683650603
Virginia658626610
Washington825791750
West Virginia844778707
Wisconsin621611573
Wyoming618585528
United States$824$781$726

(1) Average expenditure=Total written premium/liability car years. A car-year is equal to 365 days of insured coverage for a single vehicle.
(2) Preliminary.
(3) Due to the exclusion of county mutuals, which had 44 percent of the market in 2005, Texas results are not comparable with results from other states.

Source: © 2007 National Association of Insurance Commissioners.

TOP TEN MOST EXPENSIVE AND LEAST EXPENSIVE STATES
FOR AUTOMOBILE INSURANCE, 2005 (1)



Rank

Most expensive states

Average expenditure

Rank

Least expensive states

Average expenditure
1New Jersey$1,1841North Dakota$554
2D.C.1,1822Iowa555
3New York1,1223South Dakota565
4Massachusetts1,1134Idaho583
5Louisiana1,0765Kansas590
6Florida1,0636North Carolina602
7Rhode Island1,0597Wisconsin615
8Delaware1,0288Nebraska621
9Connecticut9919Wyoming639
10Nevada98310Maine644
(1) Based on average automobile insurance expenditures.

Source:  © 2007 National Association of Insurance Commissioners.
TOP FIVE MOST EXPENSIVE AND LEAST EXPENSIVE CITIES FOR AUTOMOBILE INSURANCE, 2007 (1)


Rank

Most expensive cities

Average annual auto premiums

Rank

Least expensive cities

Average annual auto premiums
1Detroit, MI$5,072 1Eau Claire, WI$869
2Philadelphia, PA3,7792Norfolk, VA954
3Newark, NJ3,3813Raleigh, NC966
4Los Angeles, CA3,0274Bismarck, ND989
5Hempstead, NY2,764 5Burlington, VT1,001
(1) As of June 2007. Assumes $100,000/$300,000/$50,000 liability limits, collision and comprehensive with $500 deductibles, and $100,000/$300,000 uninsured coverage.

Source: Runzheimer International.

  • Auto insurance is more expensive in urban areas because of the higher density of traffic, increased likelihood of theft and vandalism, and greater incidence of fraud.