16 Schools with Geology, GIS, and Earth Science Programs in Illinois, 2026 Guide

What is available in Illinois

Programs are grouped below by subject and by credential level so you can see the shape of what the state offers before you look at individual institutions. GIS and geospatial programs are usually the largest category, which reflects the job market rather than any preference of ours.

Programs in Illinois, ranked

One entry per institution, ordered by Program Quality Index score. Where an institution offers several relevant programs, we show its strongest. Full scoring detail is on the methodology page.

Every program we track in Illinois

The ranking above shows one entry per institution. This is the complete list: all 45 programs in our database for Illinois, grouped by institution, each linked to the official program page. If a school offers six relevant credentials, all six are here.

• Geology
• GIS
• Environmental
• Surveying
• Planning
• Online

Online programs Illinois students can consider

Studying in Illinois does not restrict you to institutions based in Illinois. Distance study has changed what is reachable, and we track 307 programs nationally with institution-documented online delivery. The listings below are based outside Illinois and are worth comparing against the resident programs above.

See all online programs, ranked →

The Illinois State Geological Survey

Every state maintains a geological survey that maps and characterizes its geology, groundwater, and mineral resources. For a student, the survey matters for two reasons. It publishes the geological data you will use throughout your career in the state, and it is a direct employer of geologists, hydrogeologists, and GIS staff.

BLS reported a May 2024 median annual wage of $86,780 for geoscientists in state government, against $116,470 in federal government and $83,420 in consulting. State survey work generally trades some compensation for stability, benefits, and considerably more control over your schedule than consulting offers.

Visit the Illinois State Geological Survey ↗

Licensure for geologists practicing in Illinois

Geologist licensure is granted by state boards, not nationally, and the rules differ meaningfully between states. Some states license geologists and require it for work submitted to regulators; others do not license the profession at all. Where licensure exists, it generally follows the same structure: a qualifying bachelor degree, the ASBOG Fundamentals examination, several years of supervised qualifying experience, and the Practice examination.

Two pieces of advice apply regardless of which state you are in. Take the Fundamentals exam near graduation while the coursework is fresh, and confirm before you accept your first job that you will work under a licensed geologist who can supervise qualifying experience. Both are covered in our step by step licensure guide.

Where Illinois graduates work

Employment in earth science concentrates in four places in almost every state: environmental consulting firms, state and federal agencies, utilities and water districts, and extractive or energy industry operations where the geology supports them. Local government GIS departments are a fifth and consistently overlooked category.

Nationally, environmental scientists account for about 90,300 jobs with 8,500 annual openings, against roughly 25,100 jobs and 2,000 openings for geoscientists. Whatever the local industry mix, the environmental and geospatial side of the field does most of the hiring, and a Illinois job search should reflect that.

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