There are different tools for different purposes, and different tools for different levels of technical skill and interest. All tools are now available as of 12/1/2021.

Submit maps to After you submit your map, the demographic consultants will generate the population and other demographic details for your proposed map. Maps can be viewed on the Draft Maps page or on the Interactive Review Map.

It is helpful if you submit written comments with your map describing how your map was drawn to meet the required criteria. An example of this would be describing the specific neighborhoods or communities of interest that are kept within a single district.

A variety of map-drawing tools are available:

1. Paper-only maps for those without internet access or who prefer paper.

Tools needed:

    • Public Participation Kit – Paper Map w/ Total Population Counts
    • Alternatively, submit any form of hand-drawn map that identifies street names.

2. Paper maps with a Microsoft Excel spreadsheet to calculate population totals

Tools needed:

3. Dave‘s Redistricting App (DRA) allows members of the community to create and submit proposed district maps for the city of Costa Mesa. On the main website, residents can create a user account and access a list of all their draft maps. Members of the community will need to register for an account in order to create district maps. 

Once a resident has created an account and logged in, they can access the two templates below, starting either with a blank map or with the current districts. Once the template has loaded, just click the paintbrush icon to “Make editable copy of this map.” This opens a copy that the user can modify as they want.

For additional help, please see our “Resident How-To Guide” or watch the NDC training video (FORTHCOMING).
Once you are done with your map, please share your map and email the link to the city at
About DRA
DRA 2020 is a web app to create, view, analyze and share redistricting maps for all 50 states and the District of Columbia. DRA 2020 includes demographic data from the 2020 and 2010 censuses, 2019 and 2018 5-Year ACS/CVAP estimates, and extensive election data. NDC’s city map templates can be used to start new maps. DRA 2020 also includes a rich set of analytics, including measures of proportionality, competitiveness, minority representation, compactness and splitting. Find out more information about the tool at DRA 2020 (

4. Caliper’s Maptitude Online Redistricting mapping tool to draw maps census block by census block and submit maps electronically. While this tool is very powerful, it also has the steepest learning curve.  

5. Interactive Review Map to review, analyze, and compare maps, not to create them. Zoom in and out on map boundaries, view population counts/ID#s, and view draft maps (once the draft maps are released). Similar to Google Maps in ease of use.