From healthmaps@attbi.com Fri Mar 14 17:17:10 2003 Received: from mxu2.u.washington.edu (mxu2.u.washington.edu [140.142.33.7]) by lists.u.washington.edu (8.12.1+UW03.03/8.12.1+UW03.02) with ESMTP id h2F1H9CK011126 for ; Fri, 14 Mar 2003 17:17:09 -0800 Received: from sccrmhc01.attbi.com (sccrmhc01.attbi.com [204.127.202.61]) by mxu2.u.washington.edu (8.12.1+UW03.03/8.12.1+UW03.02) with ESMTP id h2F1H7Cc008173 for ; Fri, 14 Mar 2003 17:17:07 -0800 Received: from harriet (12-229-18-75.client.attbi.com[12.229.18.75]) by sccrmhc01.attbi.com (sccrmhc01) with SMTP id <2003031501170600100bv5e6e>; Sat, 15 Mar 2003 01:17:06 +0000 From: "Richard Hoskins" To: Subject: RE: zip to county conversions Date: Fri, 14 Mar 2003 17:16:59 -0800 Message-ID: <003001c2ea90$96d7caf0$6401a8c0@harriet> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0031_01C2EA4D.88B48AF0" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.2627 In-Reply-To: <4700A586B5799F47861037F10FD081640304A7FE@host11.subnet239.battelle.org> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-Uwash-Spam: Gauge=IIIIIIII, Probability=8%, Report="HTML_70_90, IN_REP_TO, SPAM_PHRASE_01_02, __EVITE_CTYPE, __HAS_MIMEOLE, __HAS_MSMAIL_PRI, __HAS_OUTLOOK_IN_MAILER, __HAS_X_MAILER, __HAS_X_PRIORITY" This is a multi-part message in MIME format. ------=_NextPart_000_0031_01C2EA4D.88B48AF0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit It depends on the GIS you are using and/or how you are doing your geocoding. If you geocode through some packages you will get a long, lat and a census polygon ID down to the block group, maybe block , the ID of which will contain the FIPS of the county the address is in. If your GIS produces a long/lat and no county identifier, then when you get your point layer as a result of the geocoding, then you can do a point in polygon operation (varies a lot in details by GIS package) in which you overlay the address points over a county map and can subsequently determine what county the points are in. Sometimes it is tempting to do all this with just the Zip Code of the address, but in my state, WA, some 60 Zip Codes span county boundaries. With my GIS I found your long/lat to be -122.286877, 47.661326 (likely the precision is unwarranted considering the method), your census tract is 53033004100 The first two digits are Washington, the "033" means King county. Richard E. Hoskins WA State Dept of Health 1102 Quince Street, ms 47812 Olympia, WA 98504-7812 richard.hoskins@doh.wa.gov 360/236-4270 fax: 360/236-4245 -----Original Message----- From: WAPHGIS-owner@u.washington.edu [mailto:WAPHGIS-owner@u.washington.edu] On Behalf Of Orians, Carlyn E Sent: Friday, March 14, 2003 4:39 PM To: 'waphgis@u.washington.edu' Subject: RE: zip to county conversions Hi, A colleague of mine has a need to identify which county a given address is located in. What he has to work with is standard mailing address data, including zip code. Has anybody discovered a useful way to convert these to county locations? Any words of advice would be welcome. Thanks, Carlyn Orians Senior Health Research Scientist Battelle Centers for Public Health Research and Evaluation 4500 Sand Point Way NE, Suite 100 Seattle, WA 98105-3949 phone:(206)528-3320 fax: (206)528-3550 orians@battelle.org ------=_NextPart_000_0031_01C2EA4D.88B48AF0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

It depends on the GIS you are using and/or how you are doing = your geocoding.

If you geocode through some packages you will get a long, lat = and a census polygon ID down to the block group, maybe block , the ID of which will = contain the FIPS of the county the address is in.

If your GIS produces a long/lat and no county identifier, then = when you get your point layer as a result of the geocoding, then you can do a = point in polygon operation (varies a lot in details by GIS package) in which you = overlay the address points over a county map and can subsequently determine what = county the points are in.

Sometimes it is tempting to do all this with just the Zip Code = of the address, but in my state, WA, some 60 Zip Codes span county boundaries. =

With my GIS I found your long/lat to be -122.286877, 47.661326 = (likely the precision is unwarranted considering the method), your census tract = is 53033004100 The first two digits are Washington, the “033” means King county. =

Richard E. Hoskins

WA State Dept of = Health

1102 Quince Street, ms = 47812

Olympia, WA = 98504-7812

richard.hoskins@doh.wa.gov

360/236-4270

fax: 360/236-4245

-----Original Message-----
From: WAPHGIS-owner@u.washington.edu = [mailto:WAPHGIS-owner@u.washington.edu] On Behalf Of Orians, Carlyn E
Sent: Friday, March 14, 2003 4:39 PM
To: 'waphgis@u.washington.edu'
Subject: RE: zip to county conversions

Hi,

A colleague of mine has a need to identify which county a given = address is

located in. What = he has to work with is standard mailing address data,

including zip code. = Has anybody discovered a useful way to convert these = to

county locations?

Any words of advice would be = welcome.

Thanks,

Carlyn Orians

Senior Health Research Scientist

Battelle Centers for Public Health Research and = Evaluation

4500 Sand Point Way NE, Suite 100

Seattle, WA 98105-3949

phone:(206)528-3320

fax: = (206)528-3550

orians@battelle.org

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