Law firm data
Law firms in Jefferson County, Illinois
We counted 13 law firms, all with a website we read.
What these numbers say
Jefferson County holds 13 of the 3,436 firms we counted in Illinois (<1%). It ranks 21st, tied with 2 more, among the 24 areas of the state with a firm page.
We read the website of 13 of its 13 firms (100%).
With 36,550 residents, that is about 3.6 firms counted per 10,000 residents. The federal count is 3.87 law offices per 10,000 residents.
On the websites we read here, the practices advertised most are family law, personal injury and divorce. Across the state, the most advertised is personal injury.
This page joins our dataset of law firm websites (November 9, 2026) with official state registries and the Census Bureau's County Business Patterns 2023 counts. How this data is built and checked.
Practices advertised on the websites read
- Family law market data
- Personal injury market data
- Divorce
Firms with an office here
Names appear as the firm’s site or the registry gives them, and can include a lawyer’s name. A row that is only one person’s name, or a registry status such as “retired”, is counted above and not listed here.
Hanagan and Mcgovern
Checked November 4, 2026
- Website
- www.hmcomplaw.com
- Offices
- Mount Vernon 62864
- Practices
- Car accidents, Employment law, Motorcycle accidents, Personal injury, Social Security disability (SSDI and SSI), Truck accidents, Workers' compensation, Wrongful death, Wrongful termination and retaliation
- On its site
Harvey & Baker, P.C.
Checked November 4, 2026
- Website
- harveybakerlaw.com
- Offices
- Mount Vernon 62864
Hassakis & Hassakis, P.C.
Checked November 4, 2026
- Website
- hassakislaw.com
- Offices
- Mount Vernon 62864
- Practices
- Car accidents, Birth injuries, Criminal defense, Dog bites, DUI and DWI, Maritime and boating injuries, Mass torts, Medical malpractice, Motorcycle accidents, Nursing home abuse and neglect, Pedestrian and bicycle accidents, Personal injury…
- On its site
Law Office of Rebecca L. Reinhardt, LLC
Checked November 4, 2026
- Website
- rebeccareinhardtlaw.com
- Offices
- Mount Vernon 62864
LJ Arnold Attorney at Law, LLC
Checked November 4, 2026
- Website
- ljarnoldlaw.com
- Offices
- Mount Vernon 62864
- On its site
Olson & Reeves, Attorneys at Law
Checked November 4, 2026
- Website
- mtvernonlaw.com
- Offices
- Mount Vernon 62864
- Practices
- Car accidents, Birth injuries, Business formation and governance, Business and commercial law, Brain, spinal cord and burn injuries, Criminal defense, Dog bites, Drug charges, DUI and DWI, Elder law and long-term care planning, Estate planning, Record sealing and expungement…
- On its site
Parrish Law, LLC
Checked November 4, 2026
- Website
- parrishlawllc.com
- Offices
- Mount Vernon 62864
- Practices
- Criminal defense, DUI and DWI, Personal injury
- On its site
Quinn Law & Mediation, LLC
Checked November 4, 2026
- Website
- www.mountvernonlawyer.us
- Offices
- Mount Vernon 62864
- Practices
- Child custody, Divorce, Family law
- On its site
Sivia Law
Checked November 4, 2026
- Website
- www.sivialaw.com
- Offices
- Mount Vernon 62864
- Practices
- Car accidents, Business formation and governance, Business and commercial law, Contract disputes, Divorce, Education law, Elder law and long-term care planning, Employment law, Estate planning, Family law, Guardianship and conservatorship, Intellectual property…
- On its site
Jefferson County in figures
Residents, law offices and the demand agencies count in this county, from the open datasets behind the market pages.
| Measure | Value | Period | Place | Source |
|---|---|---|---|---|
| Bankruptcy cases filed | 64 cases, 12 months | 12 months ending 2026-09-30 | Jefferson County, IL county | bankruptcy v2.0.0 doi:10.5281/zenodo.23962892 record bankruptcy-17081 · status P · checked 2026-10-28 |
| Fatal crashes | 9 crashes | 2024 | Jefferson County, IL county | fatal-crashes v2.0.0 doi:10.5281/zenodo.23963480 record fatal-crashes:17081 · status P · checked 2026-10-27 |
| Federal civil cases filed by county of the plaintiff: employment | 1 cases filed, fiscal year | FY2025 | Jefferson County, IL county | federal-filings-county v2.0.1 doi:10.5281/zenodo.24024299 record federal-filings-county:17081 · status P · checked 2026-10-28 |
| Federal civil cases filed by county of the plaintiff: personal injury | 1 cases filed, fiscal year | FY2025 | Jefferson County, IL county | federal-filings-county v2.0.1 doi:10.5281/zenodo.24024299 record federal-filings-county:17081 · status P · checked 2026-10-28 |
| Law offices per 10,000 residents | 3.87 per 10,000 residents | 2026-Q1 | Jefferson County, IL county | law-offices v2.0.0 doi:10.5281/zenodo.23963687 record law-offices-17081 · status P · checked 2026-10-28 |
| Self-employed lawyers (nonemployer firms) | 7 firms | latest Nonemployer Statistics year | Jefferson County, IL county | law-offices v2.0.0 doi:10.5281/zenodo.23963687 record law-offices-17081 · status P · checked 2026-10-28 |
| Private law offices | 14 establishments | 2026-Q1 | Jefferson County, IL county | law-offices v2.0.0 doi:10.5281/zenodo.23963687 record law-offices-17081 · status P · checked 2026-10-28 |
| Residents | 36,550 residents | 2020-2024 | Jefferson County, IL county | legal-need v1.1.1 doi:10.5281/zenodo.23957291 record legal-need-17081 · status P · checked 2026-10-31 |
| Spanish speakers with limited English | 188 ±110 people age 5+ | 2020-2024 | Jefferson County, IL county | legal-need v1.1.1 doi:10.5281/zenodo.23957291 record legal-need-17081 · status P · checked 2026-10-31 |
| Veterans | 2,196 ±195 civilians age 18+ | 2020-2024 | Jefferson County, IL county | legal-need v1.1.1 doi:10.5281/zenodo.23957291 record legal-need-17081 · status P · checked 2026-10-31 |
Data and licences
Firm rows: CSV downloads under the Open Database License 1.0 (ODbL), with © OpenStreetMap contributors. Counts by state, county and practice: CC BY 4.0 dataset.
What each fact means
- Practices
- Practice areas the firm names on its own site: links, headings or practice pages.
- Spanish pages
- A Spanish version of the site, a page read in Spanish, or a link labelled Español.
- 24/7 intake
- The site says it answers around the clock (for example "available 24/7").
- Free consultation
- The site offers a free consultation or case review.
- No fee unless they win
- The site states a contingency fee or no fee unless the case is won.
- Chat, booking
- A chat tool or an online booking tool on the site.
- Structured data
- schema.org LegalService or Attorney markup on the pages read.
- Registry firm
- Listed in an official state registry; the registry facts are shown.
- Checked
- The date we last read the firm's site or the registry.
A label appears on a firm's card when its own site says so, and links to the page we read it on when we kept that page. These are statements on websites, not ratings: we never score or rank a firm. A firm can ask for a correction or to be left out on the data corrections page; we act within 7 days.