Derek Eder

Civic Tech Builder

Oak Park Climate Action Network

Squarespace website for a volunteer group of Oak Park, Illinois, residents working to eliminate our community’s contribution to the global climate crisis through equitable policies and practices.

Illinois Solar Map

As of May 2023, 1,622,000 kilowatts of operating solar capacity have been installed in the State of Illinois thanks to the Climate and Equitable Jobs Act (CEJA). The Illinois Solar Map allows you to explore solar projects by Census Tract, Place, County, and State Congressional Districts, as well as by category of project.

Decarb My State

With volunteers at Chi Hack Night, we pulled together emissions and electrification data for all 50 states + DC and organize it based on the biggest sources of climate pollution: the machines we use to heat our homes, cook our food, get us places, and produce our power. We count and name every coal, gas and oil plant that needs to close, track how many of our buildings and cars have been electrified, and how much wind and solar has been built.

Budget: Oak Park

Budget: Oak Park is a budget transparency tool for the Village of Oak Park, Illinois. It was built by Oak Park Residents Derek Eder (Partner, DataMade) and Alicia Chastain. It is not an official application from the Village. By extracting data from the Village’s official budgets from 2017, 2019 and 2021, we were able to display and compare annual budgets from 2013 through 2021.

Searchable Map Template - CSV

Put your data on a searchable, filterable map. This is a free, open source tool and template powered by javascript in the browser using Leaflet and Turf.js.

Searchable Map Template - Carto

For more heavy duty data mapping, I made a template that uses CARTO, a paid mapping platform similar to Fusion Tables.

2nd City Zoning

To make Chicago’s zoning code digestible by humans, we took inspiration from one of our favorite games: Sim City 2000. Find out how your building is zoned, learn where to locate your business and explore zoning patterns throughout the city.

Chicago Tonight

CSV to HTML Table

Display any CSV (comma separated values) file as a searchable, filterable, pretty HTML table.

How are people getting to work in Chicago?

The Census Bureau collects data on how Chicagoans get to work via the American Community Survey. I created some charts to show commuting patterns for Chicago, from the S0801 table: Commuting characteristics by sex.

How's Business?

How’s Business provides a view of Chicago’s local economy. It uses open data to show how several economic indicators have been trending since 2005.

Chicago Public School (CPS) Tiers

CPS places every part of the city into one of four socio-economic ‘tiers’ and requires selective schools to reserve the same number of spots for the students from each tier. Find which CPS tier you are in with this tool.

Chicago Tonight

Chicago Councilmatic

Are you curious about what legislation the Chicago City Council has been passing? Search, browse, subscribe and comment on everything the City Council has done since 2010.

Look at Cook

Budget transparency visualization for Cook County, IL displaying all county departments broken down by fund and control officer from 1993 to 2011. Done as a collaboration with 12th District Commissioner John Fritchey. Built with Fusion Tables and jQuery.

O'Reilly Radar


The City of Chicago launched Plow Tracker, an app that tracks the city’s snow plows in real time. This app uses the same data. By knowing where the plows are, we’ve figured which streets have been plowed.

Chicago Tonight
Chicago Tribune
Grid Chicago

Chicago Lobbyists

An open data, open government, and open source project intended to improve the transparency of interactions between the City of Chicago and lobbyists and their clients.

City press release

(Inactive) Searchable Map Template with Google Fusion Tables

Put your data on a searchable, filterable map. This is a free, open source tool and template powered by Google Fusion Tables. This template no longer works Google shut down Fusion Tables on Dec 3rd, 2019. This template no longer functions. • © 2024 Derek Eder