Contra Costa County Address Import

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Contra Costa County Address Import is an import of Contra Costa County Addresses dataset which is Contra Costa County GIS data covering addresses in Contra Costa. The import is currently (as of 2024. January 10th) at the planning stage.


Import the address dataset from CCC GIS to OSM.


  • 2024 January 9th: Planning begins, primary evaluations of data start.
  • 2024 January 10th: County contacted about possible copyright issues.
  • Currently awaiting license confirmation from County

Import Data


Provide links to your sources.

Data source site: County Website
Data license: None provided, disclaimer:
Type of license (if applicable): Unknown at this time
Link to permission (if required): Requested.
OSM attribution (if required): N/A
ODbL Compliance verified: Pending

OSM Data Files Courtesy of User:Zyphlar

Import Type

One-time import for now, data processed with QGIS, uploaded with JOSM

Data Preparation

Amazing writeup py Zyphlar:

Data Reduction & Simplification

See file above.

Tagging Plans

See file above.

Changeset Tags

Fill in the values your changesets will use.

Key Value
import yes
source name of the source dataset
source:url dataset link
source:date age of dataset at time of import, if known.
import:page link to this wiki page
source:license license of source dataset, using this format.

Data Transformation

Describe the transformations you'll need to conduct, the tools you're using, and any specific configurations or code that will be used in the transformation.

Data Transformation Results

Post a link to your OSM XML files.

Data Merge Workflow

Team Approach

I initiated the process, and Zyphlar has helped me a lot with data processing. Contributors always welcome


List all factors that will be evaluated in the import.


Detail the steps you'll take during the actual import.

Information to include:

  • Step by step instructions
  • Changeset size policy
  • Revert plans


Identify your approach to conflation here.


Add your QA plan here.

See also

The post to the community forum was sent on 2024-01-23 and can be found here