Major North American Conurbations“BOSWASH”

• Central Business District:

Historical development of urban areas…

Concentric Ring

• Census Tract:

• Proxy variables:

pre-1912 Boundary

Sector • Sector Model:

• Invasion and Succession:

Late 1800s to WWII

• Multiple Nuclei Model:

• Gentrification:

• Suburbanization:

Population of the MSA

1800s 1920s 1950s…

Population Density

HI

LOCBD

HI

LOCBD

HI

LOCBD

COLUMBIA

GLEN BURNIE

CATONSVILLE

RANDALLSTOWN

OWINGS MILLS

TOWSON

DUNDALK

ESSEX

HUNT VALLEY

MULTIPLE NUCLEI

Edge Cities

Stealth Cities

CBD

CBDMIDDLE

CLASS

UNDER

CLASS

COMMERCIAL

WAREHOUSING

SUBURBS

Garreau

-

-

-

-

-

• Edge Cities:

• Stealth City

1980s…CBD

CBDMIDDLE

CLASS

UNDER

CLASS

COMMERCIAL

WAREHOUSING

SUBURBS

1900 1990

HI

LOCBD

HI

LOCBD

Primary area of Baltimore’s “urban underclass”

• Urban Underclass:

CBD

CBDMIDDLE

CLASS

UNDER

CLASS

COMMERCIAL

FESTIVAL SPACE

SUBURBS

• Slums:

HI

LOCBD