Summary Nonattainment Area Population 

Exposure Report 

As of January 30, 2015 

Ordered by state code(s) 

The NO2 nonattainment area became a maintenance area on September 22, 1998. 

All 1-hour Ozone areas were revoked as of June 15, 2005. 

All Carbon Monoxide areas were redesignated to maintenance areas as of September 27, 2010. 

State(s

)

General 

Area Name

(see note)

2010 Population in 1000s (area count)

8-Hr 

Ozone

(2008)

8-Hr 

Ozone

(1997)

PM-2.5

(2006)

PM-2.5

(1997) PM-10

SO2

(2010

)

SO2

(1971)

Lead

(2008)

Lead

(1978

)

AK Fairbanks 87(1)

AL Troy 2(1)

AZ Ajo 9(1)

AZ 

Douglas/Paul 

Spur 

(Cochise 

County)

17(1)

AZ Hayden/Mia

mi 26(2) 20(2) 5(1) 0(1)

AZ Nogales 31(1) 30(1)

AZ PhoenixMesa 3,850(1) 3,853(1

)

AZ Rillito (Pima 

County) 1(1)

AZ West Central 

Pinal 52(1) 283(1)

AZ Yuma 101(1)

CA 

Amador and 

Calaveras 

Cos (Central 

Mountain 

Cos)

46(1) 84(1)

CA Chico 220(1) 220(1) 218(1)

CA Imperial 

County 175(1) 175(1) 154(1) 147(1)

CA 

Los AngelesSouth Coast 

Air Basin

15,723(3

)

15,719(2

)

15,716(1

)

15,716(1

)

9,437(1

)

CA 

Mariposa 

and 

Tuolumne 

Cos 

(Southern 

Mountain 

Cos)

18(1) 74(1)
State(s

)

General 

Area Name

(see note)

2010 Population in 1000s (area count)

8-Hr 

Ozone

(2008)

8-Hr 

Ozone

(1997)

PM-2.5

(2006)

PM-2.5

(1997) PM-10

SO2

(2010

)

SO2

(1971)

Lead

(2008)

Lead

(1978

)

CA Mono County 7(2)

CA 

Nevada Co. 

(Western 

Part)

82(1) 82(1)

CA Owens 

Valley 7(1)

CA Sacramento 

Metro 2,241(1) 2,244(1) 2,206(1)

CA San Diego 3,095(1)

CA 

San 

FranciscoBay Area6,973(1) 6,971(1) 6,971(1)

CA San Joaquin 

Valley 3,938(2) 3,938(2) 3,842(1) 3,842(1) 126(1)

CA 

San Luis 

Obispo-Paso 

Robles

2(1)

CA Searles 

Valley 4(1)

CA 

Southeast 

Desert 

Modified 

AQMA

1,294(2) 1,294(2) 495(2)

CA Tuscan 

Bluffs 0(1)

CA Ventura 

County 823(1) 823(1)

CA Yuba City 0(1)

CO 

DenverBoulderGreeley-Ft. 

CollinsLoveland 

Area

3,330(1) 3,330(1)

CT Greater 

Connecticut 1,629(1) 1,629(1)

DC-MDVA Washington 5,136(1) 5,136(1)

FL Jacksonville 6(1)

FL 

Tampa-St. 

PetersburgClearwater17(1) 4(1)

GA Atlanta 4,753(1) 5,265(1)

GU Piti Power 

Plant 1(1)
State(s

)

General 

Area Name

(see note)

2010 Population in 1000s (area count)

8-Hr 

Ozone

(2008)

8-Hr 

Ozone

(1997)

PM-2.5

(2006)

PM-2.5

(1997) PM-10

SO2

(2010

)

SO2

(1971)

Lead

(2008)

Lead

(1978

)

GU Tanguisson 

Power Plant 1(1)

IA Council 

Bluffs 13(1)

IA Muscatine 

County 30(1)

ID Pocatello 1(1)

ID Shoshone 

County 11(2)

IL Peoria 41(1)

IL-INWI ChicagoJoliet-Napier 9,180(1) 169(1) 36(1)

IN Evansville 6(1)

IN Indianapolis 410(2)

IN Muncie 1(1)

IN Terre Haute 54(1)

KS Salina 0(1)

KY-IN Louisville 1,019(1) 3(1)

LA Baton Rouge 733(1)

LA New Orleans 36(1)

MA Springfield 

(W. Mass) 824(1)

MA-NH 

BostonWorcesterManchester

17(1) 5,723(1) 124(1)

MD Baltimore 2,663(1) 2,663(1)

MI Belding 2(1)

MI Detroit-Ann 

Arbor 254(1)

MN MinneapolisSt. Paul 9(1)

MO Iron 0(1)

MO-IL St. Louis 2,571(1) 2,594(1) 2,573(1) 62(1) 44(2) 3(1)

MO-KS Kansas City 57(1)

MT Billings/Laur

el 3(1) 7(1)

MT Butte 34(1)

MT 

Columbia 

Falls 

(Flathead 

County)

5(1)

MT East Helena 3(1) 3(1)
State(s

)

General 

Area Name

(see note)

2010 Population in 1000s (area count)

8-Hr 

Ozone

(2008)

8-Hr 

Ozone

(1997)

PM-2.5

(2006)

PM-2.5

(1997) PM-10

SO2

(2010

)

SO2

(1971)

Lead

(2008)

Lead

(1978

)

MT 

Kalispell 

(Flathead 

County)

18(1)

MT Lame Deer 1(1)

MT Libby 9(1) 3(1)

MT Missoula 60(1)

MT Polson (Lake 

County) 4(1)

MT Ronan (Lake 

County) 3(1)

MT Thompson 

Falls 1(1)

MT 

Whitefish 

(Flathead 

County)

6(1)

NC-SC CharlotteGastonia 1,901(1)

NM Anthony 3(1)

NV Reno 421(1)

NY 

AlbanySchenectady

-Troy

970(1)

NY BuffaloNiagara Falls 1,136(1)

NY 

Essex 

County; 

Whiteface 

Mountain

0(1)

NY Jamestown 135(1) 135(1)

NY Jefferson 

County 116(1)

NY Poughkeepsi

e

770(1)

NY Rochester 1,114(1)

NY-NJCT 

New York-N. 

New JerseyLong Island

20,217(1

)

20,217(1

)

1,586(1

)

OH ClevelandAkron-Elyria 2,882(1) 230(1) 8(1)

OH Columbus 1,755(1)

OH Delta 3(1)

OH-KYIN 

CincinnatiMiddletownWilmington

1,989(1) 32(1)
State(s

)

General 

Area Name

(see note)

2010 Population in 1000s (area count)

8-Hr 

Ozone

(2008)

8-Hr 

Ozone

(1997)

PM-2.5

(2006)

PM-2.5

(1997) PM-10

SO2

(2010

)

SO2

(1971)

Lead

(2008)

Lead

(1978

)

OH-WV SteubenvilleWeirton 58(1)

OR Klamath 

Falls 47(1)

OR Oakridge 4(1) 4(1)

PA 

Clearfield 

and Indiana 

Counties

93(1)

PA Johnstown 157(1) 157(1)

PA Lancaster 519(1) 519(1) 519(1)

PA PittsburghNew Castle 2,356(1) 2,356(1) 2,164(2) 2,164(2) 142(2) 5(1) 18(1)

PA Reading 411(1) 411(1) 49(2)

PA Warren 

County 18(1)

PA-DENJ-MD

PhiladelphiaWilmingtonTrenton

7,634(2) 7,797(1) 5,798(1) 5,798(1)

PA-NJ 

AllentownBethlehemEaston

712(1) 647(1) 109(1)

PR Arecibo 32(1)

RI Providence 

(all of RI) 1,053(1)

TN 

Johnson 

CityKingsportBristol

27(1) 2(1)

TN Knoxville 573(1) 682(1) 682(1)

TN Memphis 1,127(1)

TN-GAAL Chattanooga 471(1)

TX Dallas-Fort 

Worth 6,280(1) 6,221(1) 4(1)

TX El Paso 649(1)

TX 

HoustonGalvestonBrazoria

5,892(1) 5,892(1)

UT Ogden 83(1)

UT Provo 518(1) 517(1)

UT Salt Lake 

City 1,665(1) 1,030(1)

1,030(1

)

UT Tooele 

County 58(1)
State(s

)

General 

Area Name

(see note)

2010 Population in 1000s (area count)

8-Hr 

Ozone

(2008)

8-Hr 

Ozone

(1997)

PM-2.5

(2006)

PM-2.5

(1997) PM-10

SO2

(2010

)

SO2

(1971)

Lead

(2008)

Lead

(1978

)

UT-ID Logan 125(1)

WA SeattleTacoma 540(1)

WI Rhinelander 18(1)

WI Sheboygan 116(1) 116(1)

WV-OH ParkersburgMarietta 4(1)

WV-OH Wheeling 20(1)

WY Sheridan 17(1)

WY Upper Green 

River Basin 11(1)

2010 Population in 1000s (area count) by Pollutant

Total Estimated 

2010 Population (in 

1000s) 

Nonattainment 

Across All Criteria 

Pollutants: 143,318

8-Hr 

Ozone

(2008)

8-Hr 

Ozone

(1997)

PM-2.5

(2006)

PM-2.5

(1997) PM-10

SO2

(2010

)

SO2

(1971)

Lead

(2008)

Lead

(1978

)

123,004

( 46)

101,416

( 36)

42,143

( 22)

38,627

( 14)

9,564

( 39)

1,935

( 29)

1,217

( 9)

9,663

( 21)

5

( 2)

The Summary Population Exposure Report is a summary of the population living in an area that is in 

nonattainment for at least one of the NAAQS. 

Area Name: 

The "State(s) Area Name" column contains a common or general name for the nonattainment areas 

on the row, but may not reflect the exact name of any area on the row. This column cannot be exact 

since the nonattainment area for one pollutant may not contain the same counties, cities, or states as 

the nonattainment area for another pollutant on the same row. The abbreviations listed in the 

"State(s)" column reflect all states identified in row. However, some states on a row may be 

nonattainment for some pollutants and not for others in the general area. A multi-state area with 

states that have not all been redesignated to maintenance is counted as a nonattainment area until all 

of the states in the area are redesignated, with the whole area population displayed.