New York attorney record · Judicial Dept 3
Leonard Edward Sienko Jr.
Boston College Law School alumna, admitted to the New York bar in 1978, registered office in Hancock, NY. A half-lifetime's worth of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 1978
- Admitted
- 48
- Years in bar
- 1373877
- NY reg #
The record in one line
Leonard Edward Sienko Jr. has spent 48 years on the register since admission in 1978, one of the longest-standing active practitioners the state bar carries at 92% tenure percentile.
- 48 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- Top 8%
- by tenure among active NY attorneys
- Law school
- Boston College Law School
What this profile tells you
Bar status & tenure
Leonard Edward Sienko Jr. has carried New York bar registration 1373877 for the better part of a career, still active and in good standing. Registration is recorded within Judicial Department 3, the appellate division overseeing this attorney's home district.
Practice context & education
Practice address is listed under Leonard E Sienko Jr Attorney At Law, located in Hancock, NY (Delaware County), ZIP 13783. Educational background: Boston College Law School (2,021 registered alumni).
State context & due diligence
Across a career spanning 48 years, Leonard Edward Sienko Jr. has remained part of the New York bar's active cohort, a share of the register detailed further below.
Experience vs. the active New York bar
Leonard Edward Sienko Jr.'s 48 years since a 1978 admission places this record near the far edge of the statewide tenure curve below.
48 years on the New York bar
Years since admission, all currently-active NY attorneys
48 Top 8% higher than 92% of 284,296 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 · May 2026
How Leonard compares to fellow Boston College Law School alumni
Among the 1,575 Boston College Law School graduates in the New York register, Leonard Edward Sienko Jr. is longer-tenured than 99% - a school-cohort view of experience, alongside the statewide one above.
48 years vs. Boston College Law School alumni
Years since admission - 1,575 NY-registered alumni of this school
48 Top 1% higher than 99% of 1,575 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 · May 2026
Boston College Law School's active-bar rate
Of Boston College Law School's 2,021 alumni in the New York register, 78.5% currently hold "Currently registered" status, above the statewide average.
Boston College Law School alumni, active-bar rate
The 1978 admission class today
Of the 3,834 attorneys admitted to the New York bar in 1978, 52.6% are still "Currently registered" today, below the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 1373877
- Year Admitted
- 1978 (48 yrs · veteran)
- Judicial Department
- 3
- Next Registration
- Aug 2026
Location & Contact
- Company
- Leonard E Sienko Jr Attorney At Law
- City
- Hancock, NY
- County
- Delaware
- ZIP Code
- 13783
- Phone
- (607) 637-5400
Education
Status Distribution Across the New York Bar
Leonard Edward Sienko Jr.'s current status, "Currently registered", places this attorney in the 66.2% of the 429,620-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.
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Compare attorneys →Before you rely on this record
Leonard Edward Sienko Jr.'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 Leonard Sienko licensed?
Leonard Sienko is licensed to practice law in New York.
When was Leonard Edward Sienko Jr. admitted to the bar?
Leonard Edward Sienko Jr.'s admission to the New York bar dates back to 1978.
Where did Leonard Edward Sienko Jr. go to law school?
Leonard Edward Sienko Jr. attended Boston College Law School.
What company does Leonard Edward Sienko Jr. work for?
Leonard Edward Sienko Jr. is associated with Leonard E Sienko Jr Attorney At Law in Hancock, NY.
Is Leonard Edward Sienko Jr. in good standing?
Yes, Leonard Edward Sienko Jr. holds active bar status ("Currently registered").
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.