Attorneys in Oak Park, IL

8 registered attorneys

Source: NY Office of Court Administration, attorney registration dataset via data.ny.gov.

Oak Park, IL - local register slice

Rank #23 of 40IL cities by NY office-row count.

Admission years on file: 1985–2015 (median 2006) across 8 dated rows. Longest-tenured listed office peers: Jeffrey Alan Weissglass (1985) , Dennis Lee Hudson (1986) , Dina Vasiliki Zissimopoulos (1994) .

Oak Park's register footprint

Oak Park leans on Currently registered at 75% of office rows, with a moderate status mix index of 5,938.

Among school-named rows, The John Marshall Law School alone is 33% (school mix index 3,333).

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

All (8) Currently registered (6) Due to reregister within 30 days of birthday (1) Suspended, delinquent (1)

Register status - Oak Park

office rows

What this shows 6 Currently registered of 8.

Source NY OCA Attorney Registrations via data.ny.gov As of 2026-08-06
Name Status
Timothy Sean O'Brien Due to reregister within 30 days of birthday

Showing 1–1 of 1 attorneys with status Due to reregister within 30 days of birthday

Oak Park's nearest office-count peers

Cities nearest Oak Park on NY office-row count (8).

Glencoe, IL 8 (tie) Hoffman Estates, IL 8 (tie) Rosemont, IL 8 (tie) Springfield, IL 8 (tie) Barrington, IL 9 (delta 1)

Source: NY Office of Court Administration via data.ny.gov - attorney registration counts.

Read our methodology - how this data is sourced, computed, and verified.