Attorneys in Washington, DC

12,541 registered attorneys

Washington office-market desk (DC)

Statewide count rank #1 / 5DC cities, a mega office market.

Among 12,541 non-deceased rows with an admission year, the span runs 1956-2026 (median 2009). Longest-tenured listed office peers: Daniel Morris Singer (1956) , Don Wallace Jr (1957) , Jack Louis Lipson (1958) .

Washington's register footprint

Washington, DC concentrates in Currently registered (83% of 12,541 rows; status mix index 6,965).

Among school-named rows, Georgetown University Law Center alone is 41% (school mix index 3,451).

Mix index is HHI×10,000 on OCA status shares and on school-named rows. Distinct from the statewide rank line above.

Washington office-book shape

Washington spreads named employers across 4,938 firms (mix index 18); U.S. Department Of Justice leads at 182 of 12,140 named rows.

ZIP book runs 170 codes; 20006 holds 14% (1,773 rows).

Judicial dept 3 covers 52% of dept-tagged rows (6,493 of 4 departments present).

Largest admission decade is the 2010s at 37% of 12,541 dated rows - no single decade majority.

Derived from employer, ZIP, judicial-department, and admission-year fields on the same OCA extract - not a market-quality ranking.

Washington status stack

office rows

What this shows 83% Currently registered among 12,541 office rows.

Source NY OCA Attorney Registrations via data.ny.gov As of 2026-08-06
Name Status
Alexander David Nye Currently registered
Rustum George Nyquist Currently registered
Brian Nysenbaum Currently registered
Alice Anne O'Brien Currently registered
Alicia C. O'Brien Currently registered
Amy Margaret O'Brien Currently registered
Brett John O'Brien Currently registered
Diane Jeanette O'Brien Currently registered
Elliott Patrick O'Brien Currently registered
James C. O'Brien Currently registered
Jane Baek O'Brien Currently registered
Paul Edward O'Brien Currently registered
Rebecca O'Brien Currently registered
Shaun Christopher O'Brien Currently registered
William Thomas O'Brien Currently registered
Brendan Donal O'Callaghan Currently registered
Edward Casey O'Callaghan Currently registered
Andrew James O'Connell Currently registered
Christian Edward O'Connell Currently registered
James Joseph O'Connell Jr Currently registered
Michael Francis O'Connell Currently registered
Aidan Kathleen O'Connor Currently registered
Alyssa Therese O'Connor Currently registered
Charles Raymond O'Connor Currently registered
David Andrew O'Connor Currently registered
Devin Maura O'Connor Currently registered
Elizabeth Margaret Markey O'Connor Currently registered
Henry Robinson O'Connor Iii Currently registered
Maura Eileen O'Connor Currently registered
Maureen Mckay O'Connor Currently registered
Noah David Costley O'Connor Currently registered
Holly Hoeft O'Donnell Currently registered
Margarita Kathleen O'Donnell Currently registered
Renata Marie O'Donnell Currently registered
Sean K. O'Dowd Currently registered
Christopher Sean O'Grady Currently registered
Emma Kristin O'Hara Currently registered
Margaret Kathryn O'Hora Currently registered
Mark Timothy O'Horo Currently registered
Michael Kenny O'Keefe Currently registered
Meredith Lynn O'Leary Currently registered
Tara Anne O'Malley Currently registered
Kelley Leigh O'Mara Currently registered
Michael Joseph O'Mara Currently registered
David Andrew O'Neil Currently registered
Anne Arundel Burnett O'Neill Currently registered
Colleen V O'Neill Currently registered
Kathleen Suzanne O'Neill Currently registered
Laura Emily O'Neill Currently registered
Karen Marie O'Neill Ocasio Currently registered

Showing 6,851–6,900 of 10,364 attorneys with status Currently registered

Out-of-state peers for Washington

Washington, DC at 12,541 office rows and 83% Currently registered - matched below on count and active rate (not the nearest-count strip above).

Counts and active rates come from the NY State Office of Court Administration registration extract; peers are not a market-quality or employment ranking.