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New York City Census FactFinderNew York City’s Census Data Aggregation Tool

TM

Erica Maurer

POPULATION DIVISION

1. Background

a. Decennial Census vs. American Community Survey

b. Census Tracts and Neighborhood Tabulation Areas

2. New York City Census FactFinder

a. How it works

b. Key benefits

c. Future of CFF

3. Live demonstration of NYC Census FactFinder

Outline

2010 Census and ACS

• 2010 Census was a “short form” census ONLY, focusing on counting the U.S. population for congressional apportionment and legislative redistricting. Questions on age, sex, race, Hispanic origin, relationship to head, & housing tenure

• The socioeconomic data are now collected in the ACS

ACS Variables

**Computer Ownership & Internet Access – New for 2013

The ACS Sample - reliability

• ACS samples 3.5 million addresses each year – 2.2 million final interviews

• As a result, the ACS needs to combine data from multiple years to produce reliable numbers for small geographic areas

• ACS publishes Margins of Error (MOEs) to let users know how reliable estimates are

Example:Income of $60,000has MoE of $5,000Could be as high as $65,000Could be as low as $55,000

What are acceptable levels of relative reliability when using ACS estimates?

Remember:Income of $60,000with CV of 20 percenthas MoE of +/-$20,000

“CVs of 10-12 percent or less are often accepted as a reasonable standard of precision for an estimate.”

– Using the American Community Survey: Benefits and Challenges, 2007

“While there is no hard-and-fast rule, for the purposes of this handbook, estimates with CVs of more than 15 percent are considered cause for caution when interpreting patterns in the data.”

– Census Bureau’s ACS Compass Handbook Series, 2009

© 2012 Population Reference Bureau. All rights reserved. www.prb.org

Reliability of ACS Poverty DataAcross Tracts of Varying Size

PRB | INFORM, EMPOWER, ADVANCE

0

10

20

30

40

Demographic & SocialVariables

Economic Variables Housing Variables

Census Tracts

Neighborhoods

Median Overall Coefficients of Variation for

Bronx Census Tracts and Neighborhoods, 2001-2005 ACSC

oef

fici

en

t o

f V

aria

tio

n

2.81 3.19 3.02

21.6

10.9

32.9

8.4

26.8

7.7

Ratio of Tract CV toNeighborhood CV =

E New York

Canarsie

Great Kills

St Albans

Bay Rdg

S Ozone Pk

Rosedale

Steinway

Flatlands

Queens Vlg

Forest Hls

Bellerose

Jamaica

Whitestone

Hunts Pt

Astoria

Middle Vlg

Westerleigh

Flatbush

Murray Hl

College Pt

Arden Hts

Borough Pk

Flushing

Baisley Pk

Ridgewood

Hollis

Jackson Hts

Laurelton

S Jamaica

Crown Hts N

W Vlg

BedfordRichmond Hl

Maspeth

Elmhurst

Midwood

Co-Op City

Glendale

Dyker Hts

Greenpoint

Madison

Bensonhurst W

E Flushing

Woodhaven

Gravesend

Auburndale

Brownsville

Kew Gdns Hls

E Hrlm N

Woodside

Cambria Hts

Ozone Pk

Clinton

Rego Pk

Corona

E Vlg

Ocean Hl

Clinton HlStuyvesant Hts

Kew Gdns

E Hrlm S

N Corona

E Elmhurst

Pelham Pkwy

Springfield Gdns N

Crown Hts S

BaysideBayside Hls

RossvilleWoodrow

Far RckwyBayswater

LindenwoodHoward Bch

StapletonRosebank

SeagateConey Is

N SideS Side

New DorpMidland Bch

Pk SlopeGowanus

OakwoodOakwood Bch

E FlatbushFarragut

WoodlawnWakefield

Jamaica EstsHolliswood

New BrightonSilver Lake

Mott HavenPrt Morris

RugbyRemsen Vlg

BriarwoodJamaica Hls

Springfield Gdns SBrookville

AllertonPelham Gdns

Fresh MdwsUtopia

Prospect Lffrts GdnsWingate

CharlestonRichmond Vly

Tottenville

Hunters PtSunnyside

W Maspeth

SchuylervilleThrogs Nck

Edgewater Pk

Old TownDongan Hls

S Bch

Douglas MnrDouglastonLittle Nck

Ft TottenBay TerClearvw

N RiverdaleFieldstonRiverdale

Sheepshead BayGerritsen Bch

MN Bch

PomonokFlushing Hts

Hillcrest

New SpringvilleBloomfield

Travis

Todt HlEmerson HlHeartlnd VlgLghthouse Hl

AnnadaleHuguenot

Prince's BayEltingvl

Mariner's HbrArlingtonPrt Ivory

Graniteville

Sunset Pk W

Oakland Gdns

Homecrest

E Williamsburg

Bensonhurst E

Upper W Side

Sunset Pk E

Bath Bch

Wash Hts S

Wash Hts N

E Tremont

Lower E Side

Queensboro Hl

Erasmus

Ft Greene

Yorkville

Mt Hope

Norwood

Lincoln Sq

Belmont

V Cortlandt Vlg

Bronxdale

Rikers Island

Old Astoria

Brighton Bch

Chinatown

Ocean Pkwy S

Hamilton Hts

Morningside Hts

Windsor Ter

Central Hrlm S

Longwood

Parkchstr

Williamsburg

Kingsbridge Hts

Prospect Hts

W Brighton

Gramercy

Manhattanville

Fordhm S

DUMBOVinegar Hl

Dwntwn BKBoerum Hl

Starrett City

E New York (PA Ave)

WillmsbridgeOlinville

MidtownMidtown S

Cypress HlsCity Line

WestchstrUnionprt

ElmhurstMaspeth

E ConcConc Vlg

ClarmntBathgate

W FarmsBronx Riv

Upper E SideCarnegie Hl

Turtle BayE Midtown

University HtsMorris Hts

Spuyten DuyvilKingsbridge

MorrisaniaMelrose

Bedfrd PkFordhm N

Marble HlInwood

SoundviewBruckner

Murray HlKips Bay

Lenox HlRoosevelt Is

KensingtonOcean Pkwy

Battery Pk CityLower MN

Melrose SMott Haven N

BK HtsCobble Hl

Stuy TownCooper Vlg

EastchstrEdnwldBaychstr

Carroll GdnsColumbia St

Red Hook

Grymes HlCliftonFox Hls

Glen OaksFloral Pk

New Hyde Pk

W New BrightonNew Brighton

St George

Van NestMorris Pk

Westchtr Sq

GrasmereArrochar

Ft Wadsworth

Pelham BayCountry Club

City Island

QueensbridgeRavenswood

LIC

HammelsArverne

Edgemere

SoundviewCastle HlClason Pt

Harding Pk

Breezy PtBelle HbrRckwy Pk

Broad Channel

Hudson YrdsChelseaFlat IronUnion Sq

SoHoTriBeCaCivic Ctr

Little Italy

GrgtwnMarine PkBergen BchMill Basin

Neighborhood Tabulation Areas (NTAs)

New York City

Neighborhood Tabulation Areas or NTAs, are

aggregations of census tracts that are subsets of

New York City's 55 Public Use Microdata Areas

(PUMAs). Primarily due to these constraints,

NTA boundaries and their associated names may

not definitively represent neighborhoods.

LAGUARDIAAIRPORT

JOHN F. KENNEDYINTERNATIONAL AIRPORT

Bronx

Queens

Manhattan

Brooklyn

Staten

Island

West Village

NTAs are composed

of Census Tracts

NTAs

NYC Count = 188

Median Population = 36,600

Median # HUs = 15,100

Source: U.S. Census Bureau, American Community Survey, 2006-2010 Summary File

Population Division-New York City Department of City Planning

Coefficients of Variation (CV) for Population Living Below Poverty

New York City Census Tracts & Neighborhoods (NTAs), 2008-2012

Source: U.S. Census Bureau, 2008-2012 American Community Survey-Summary FilePopulation Division-New York City Department of City Planning

CV<20%20.1% of all tracts

N=2,168

CV<20%94.7% of all NTAs

N=188

New York CityCensus FactFinder

Selected Census Tracts: Manhattan 169, 173, 175, 179

Selected Census Tracts: Manhattan 169, 173, 175, 179

Key Benefits &Looking to the Future

1. Aggregate statistics on the fly for custom study areas

2. Clearly addresses issues of ACS data reliability

3. New York City specific

4. One of a kind

Key Benefits to NYC Census FactFinder

1. Annual data update and expanded content

2. Targeted visualizations?

3. Longitudinal socioeconomics?

Looking to the Future

Web Link and Feedback

• New York City Census FactFinder:

www.nyc.gov/cff

• NYC Census Factfinder Feedback email address:

CFF_DL@planning.nyc.gov