New York attorney record · Judicial Dept 1
Kathleen Ann Costello
American University Washington College Of Law alumna, admitted to the New York bar in 1990. Decades of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 1990
- Admitted
- 36
- Years in bar
- 2322667
- NY reg #
The record in one line
With 36 years on the register since a 1990 admission, Kathleen Ann Costello ranks among the New York bar's most senior active practitioners, longer-tenured than 79% of the currently-active bar.
- 36 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- Top 21%
- by tenure among active NY attorneys
- Law school
- American University Washington College Of Law
Data updated September 2026
What this profile tells you
Bar status & tenure
Registration 2322667 with the New York bar authority has long belonged to Kathleen Ann Costello, a veteran practitioner still in active good standing. Registration is recorded within Judicial Department 1, the appellate division overseeing this attorney's home district.
Practice context & education
No firm or business address is on record, despite 36 years on the register. Educational background: American University Washington College of Law (3,933 registered alumni).
State context & due diligence
After 36 years on the register, Kathleen Ann Costello still falls within the New York bar's active cohort, a share of the register detailed further below.
Experience vs. the active New York bar
Few active New York attorneys match Kathleen Ann Costello's 36 years since admission in 1990.
36 years on the New York bar
Years since admission, all currently-active NY attorneys
36 Top 21% higher than 79% of 290,787 active NY attorneys
Each bar is a band; taller bars hold more active NY attorneys. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NY Office of Court Administration, Attorney Registration · September 2026
How Kathleen compares to fellow American University Washington College Of Law alumni
Among the 2,716 American University Washington College Of Law graduates in the New York register, Kathleen Ann Costello is longer-tenured than 99%.
36 years vs. American University Washington College Of Law alumni
Years since admission - 2,716 NY-registered alumni of this school
36 Top 1% higher than 99% of 2,716 fellow alumni
Each bar is a band; taller bars hold more fellow alumni. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NY Office of Court Administration, Attorney Registration · September 2026
American University Washington College Of Law's active-bar rate
Of American University Washington College Of Law's 3,933 alumni in the New York register, 77.2% currently hold "Currently registered" status, above the statewide average.
The 1990 admission class today
Of the 6,112 attorneys admitted to the New York bar in 1990, 56.3% are still "Currently registered" today, below the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 2322667
- Year Admitted
- 1990 (36 yrs · veteran)
- Judicial Department
- 1
- Next Registration
- Jul 2028
Location & Contact
Status Distribution Across the New York Bar
Kathleen Ann Costello's current status, "Currently registered", places this attorney in the 67.2% of the 432,625-attorney New York register currently marked active.
Full statewide breakdown & source note
Source: NY Office of Court Administration, Attorney Registrations. Status counts reflect the latest reporting cycle. Bar status confirms registration only; it does not imply competence, specialty fit, or freedom from complaints.
Near-tenure American University Washington College Of Law alumni
Fellow alumni on the NY register whose admission year is closest to 1990 .
Same admission year (1990), other cities
NY-registered attorneys admitted in 1990 whose listed office city differs from this record, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Out-of-state NY bar peers for Kathleen Ann Costello with the closest admission year to 1990. Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Counts come from the NY State Office of Court Administration registration extract; peers are not a competence or practice-area ranking.
Verify This Attorney
Verify on NY Courts Attorney SearchBefore you rely on this record
Kathleen Ann Costello's "Currently registered" listing confirms bar standing only, it is a registration fact to verify, not a verdict on quality or competence.
Frequently Asked Questions
Where is Kathleen Costello licensed?
Kathleen Costello is licensed to practice law in New York.
When was Kathleen Ann Costello admitted to the bar?
Kathleen Ann Costello's admission to the New York bar dates back to 1990.
Where did Kathleen Ann Costello go to law school?
Kathleen Ann Costello attended American University Washington College of Law.
Is Kathleen Ann Costello in good standing?
Yes, Kathleen Ann Costello holds active bar status ("Currently registered").
Cite this page & disclosure
Sourced from the NY Office of Court Administration, informational only, not legal advice. Full disclosure.
Read our methodology - how this data is sourced, computed, and verified.