Mapping D.C.’s Nightlife Boom

Kate Rabinowitz // June 29, 2017 // originally published by D.C. Policy Center

In 2008, D.C. had just over 800 bars, clubs, and restaurants. In 2016, there were nearly 1,300. Over this general time span, the District population grew by over 100,000 (from 580,236 residents in 2008 to 681,170 in 2015), and its median income rose from $57,936 to $75,628. The influx of well-off professionals with money to spend led to a boom in the city’s nightlife and restaurant scene. The map below shows liquor licenses for bars, clubs, and restaurants from 2008 to 2016. Use the slider to see how D.C.’s nightlife has grown across the time period. Read on...

Mapping D.C. Nightlife, 2008-2016

Liquor license locations for bars, restaurants, and clubs

Nightlife in:

First year of liquor license


Source: ABRA, DataLensDC

A History of DC Pride's Places and Spaces

Kate Rabinowitz // June 8, 2017 // originally published by D.C. Policy Center

Washington, D.C. is home to one of the largest pride celebrations in the country. Started in 1975, what's now referred to as Capital Pride is just one piece of a larger LGBT movement in D.C. over the past six decades that sought, and continues to seek, equal treatment and acceptance. Bars, bookstores, group homes, clinics and churches across the District played an essential role in providing safe spaces to a community facing discrimination as it fought for its rights.

Below maps the places and spaces important to the LGBT community in D.C. over more than 50 years. The data is available through The Rainbow History Project, an organization dedicated to collecting, preserving, and promoting LGBT history in D.C. Read on...

Prince George’s County a Popular Home for Many Former D.C. Residents

Kate Rabinowitz // May 11, 2017 // originally published by D.C. Policy Center

While D.C. is an international city, with residents arriving from and departing to places all over the world, most of its domestic migration is very local: Prince George’s County, Montgomery County, Arlington County, Fairfax County, and Alexandria are the top five places within the U.S. that D.C. residents move to and from. They make up 31 percent of where new D.C. residents come from, and 42 percent of where D.C. residents go when they move out.

Within our interconnected metro region, what do these flows of people look like and what places are gaining or losing residents on net? The chart below shows the D.C. metro region by outflows of people moving from one location to another county or city in the region.

Each arc on the outer edge of the circle represents the county where people moved from. The length of each arc represents the number of people who left that county to move elsewhere in the metro area (the connected arc). Read on...

The Health Wealth Gap in D.C.

Kate Rabinowitz // May 2, 2017 // originally published by D.C. Policy Center

Recent research from a team headed by Stanford economist Raj Chetty made headlines last year when it outlined the stark divide in health outcomes between high- and low-income Americans. As the New York Times reports, the Health Inequality Project found that longevity has steadily increased across the nation for the richest Americans, but life expectancy for the poor is highly variable depending on where they live. In this measure, Washington, D.C. does not fare well: among the 100 most populated counties, D.C. ranks 65th by average life expectancy for the poorest 20 percent of its residents.

While the Health Inequality Project’s study focuses at life expectancy disparities at the county level, the CDC’s and Robert Wood Johnson Foundation’s 500 cities project provides more color to the stark health divide between D.C.’s richest and poorest. Using this data to compare the District’s 32 highest income census tracts, which all make over $110,000 a year, with the 32 lowest income tracts, with annual income under $35,000, reveals striking disparities across behavior, health, and chronic conditions.

The wealth gap in healthy activities

Members of D.C.’s poorest communities were twice as likely to be obese, and report regularly receiving fewer than 7 hours of sleep. They were also three times as likely not to exercise. Higher rates of obesity, along with less sleep and exercise, are well-documented effects of longer commute times, fewer walkable areas, food deserts, crime, and stress associated with poverty. The one reported unhealthy activity wealthiest residents were more likely to partake in was binge drinking. Read on...

Why Visualizing Open Data Isn't Enough

Kate Rabinowitz // April 3, 2017 // originally published by D.C. Policy Center

With a new proposed Data Policy, release of high profile datasets on topics like 311 and taxicabs, and Open Government Advisory Group, the D.C. Government looks interested in moving up the ranks of open data cities. This is good news for policymakers, businesses, and citizens. But with open data comes the duty to use it responsibly.

This doesn’t always happen. A recent example is an analysis of pedestrian safety that declared that the most dangerous neighborhoods for pedestrians are largely located in and around Capitol Hill, accounting for 21 percent of pedestrian traffic complains within the top 10 neighborhoods (see below).

Capitol Hill and surrounding neighborhoods in top 10 for reported neighborhood issues, according to Vision Zero data

Source: District Ninja

The findings were based on data from the city’s Vision Zero initiative to reach zero fatalities during transit by 2020. In July 2015, D.C. released an app and website as part of the initiative allowing citizens to report pedestrian, bike, or driving safety issues. The District took a great “open by default” approach, quickly making the data publicly available on, and actively engaging the data community.

All data is not created equal, though, and how data is created must be factored into any analysis. Read on...

A Data-Driven Guide to Finding Bike in Bloom

Kate Rabinowitz // March 17, 2017 // originally published by Washingtonian

Despite a cold snap and and a snowstorm that will likely result in a greatly diminished peak-bloom period, the National Cherry Blossom Festival is still on. And that means it’s time for the return of one of Capital Bikeshare most popular promotions: the #BikeinBloom, in which the system adds a single pink bike to its fleet of nearly 4,000. For four weeks, the pink bike is released into the Capital Bikeshare system—which spans DC, Arlington, Alexandria, Fairfax County, and Montgomery County—for riders to find, ride, and photograph.

But spotting a single bike among the entire network sounds daunting. Looking back at the bike’s movements during 2016’s Cherry Blossom Festival might provide some insight for Capital Bikeshare users hoping to find this year’s model.

The pink bike was the most popular vehicle in Capital Bikeshare’s system for the four weeks it was available last year. In 2016, the bike was used 220 times, compared to a fleet-wide average of 77 uses in the same period. But that doesn’t mean the bike in bloom was especially well-traveled. Despite its constant ridership, the pink bike only made to just over a quarter of the nearly 400 stations Capital Bikeshare had at the time. Not surprisingly, it was parked most frequently at docks along the National Mall or other tourist destinations, as shown in the map below. Read on...

A Decade of Demographic Change

Kate Rabinowitz // March 2, 2017 // originally published by D.C. Policy Center

The Census Bureau recently announced that D.C.’s population has risen to a four-decade high of almost 700,000, a boom driven largely by an influx of new residents. These new District residents have undeniably changed the demographic makeup of D.C., which on the whole has become whiter, wealthier, and younger over the past decade.

However, these changes have not happened consistently across all parts of the District. We can see where these trends have been most pronounced when we look at data from individual neighborhoods “clusters” (group of neighborhoods that are frequently used for data analysis and planning purposes). The maps below show changes in race, wealth, and age by neighborhood cluster between two five-year spans, from 2006-2011 and from 2011-2015. Read on...

Mapped: DC Cab Pickups

Kate Rabinowitz // December 14, 2016 // originally published by Greater Greater Washington

From January to August 2016, DC cabs picked up more than eight million riders. From looking at when and where, we can see the busy nightlife scene on U Street NW, the midday tourist boost on the Capitol Grounds, and the sheer diversity of reasons people go to Dupont Circle. Read on...

In 2016, Almost No Women Spoke at DC Tech and Data Meetups

Kate Rabinowitz // November 7, 2016

DC is often cited as the #1 place for women in tech, but you wouldn’t know it by attending some of the area’s biggest tech meetups. The region has an active tech and data meetup community that hosts professional events. They can be great places to learn, network, and job search. Unfortunately, these events rarely reflect the industry’s diversity in DC, and that can have far-reaching effects. Taken back by the speaker gap the data revealed, I’ve also created to help promote women speakers.

I looked at the gender diversity of speakers at 114 events in 2016 from 16 DC area meetups. These meetups were selected because they had over 1,000 members and typically held educational events featuring a single or few speakers. The results were startling. In 2016, there were no single-speaker events where a woman was the speaker. Read on...

Today's DC Library: Fewer Books, but More Media and Visitors

Kate Rabinowitz // October 19, 2016 // originally published by Greater Greater Washington

As reading habits change, so does the DC Public Library. With the number of books down, but other media and library visits up, the library is much more than its book collection, as I recently wrote for Greater Greater Washington.

The meaning of curling up to a book has broadened over the past decade. It could mean an actual physical book, but also scrolling down your smartphone or listening to a book over headphones. With a limited collections budget, how has the DC Public Library balanced traditional physical books with newer mediums? Read on...

There's more! Check out the archive.