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Data Analyst Jobs in Alton, IL (NOW HIRING)

Stellar IT Group

Data Analyst

Saint Louis, MO · On-site

Data Analyst Job Location: Remote Interview: Virtual Job Duration: 6 Months Contract Overview: We are seeking a Data Analyst with strong SQL and Python expertise to support data validation, data ...

The Timberline Group

Data Analyst

Saint Louis, MO · On-site +1

We seek the talent of a dynamic Data Analyst who seeks to bring their A game to a collaborative team of talented professionals. You are not afraid to make impact where your opinion matters in a ...

staffit solutions

Data Analyst

Saint Louis, MO

This position will be responsible for understanding and analyzing complex business & data requirements. Prepare detailed functional specifications that drive the design of data model and ETL ...

Guidehouse

Data Analyst

Fairview Heights, IL · On-site

$77K - $129K/yr

Provide data analysis, management, and reporting support for enterprise systems and mission-critical programs. * Design, develop, and maintain data models, dashboards, and analytical solutions to ...

Guidehouse

Data Analyst

Fairview Heights, IL · Hybrid

$77K - $129K/yr

Provide data analysis, management, and reporting support for enterprise systems and mission-critical programs. * Design, develop, and maintain data models, dashboards, and analytical solutions to ...

staffit solutions

Data Analyst

Saint Louis, MO · On-site

Company Description Description : • This position will be responsible for understanding and analyzing complex business & data requirements. • Prepare detailed functional specifications that drive ...

Stifel

Data Analyst

Saint Louis, MO · On-site

The Data Analyst is responsible for servicing ad-hoc data extraction and reporting requests originating from various areas of the business as well as support discovery or solutions for firm data ...

Navigant Consulting

Data Analyst

Fairview Heights, IL · On-site

$77K - $129K/yr

Provide data analysis, management, and reporting support for enterprise systems and mission-critical programs. * Design, develop, and maintain data models, dashboards, and analytical solutions to ...

Cliftonlarsonallen

Data Analyst Senior

Saint Louis, MO · On-site +1

$107K - $155K/yr

The Data Analyst Senior cleans up data for analysis and/or visual display in a report or dashboard, or they work out details regarding data access to support a project. Our Data Analysts favorite ...

Guidehouse

Data Analyst Consultant

Fairview Heights, IL

$68K - $113K/yr

FOUR (4) years of military, GIS, or data analysis related equivalent experience may be used in lieu of degree * THREE (3) or more years' experience in IT or Data Analysis What Would Be Nice To Have:

Guidehouse

Data Analyst Consultant

Fairview Heights, IL · On-site

$68K - $113K/yr

FOUR (4) years of military, GIS, or data analysis related equivalent experience may be used in lieu of degree * THREE (3) or more years' experience in IT or Data Analysis What Would Be Nice To Have:

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All JobsData Analyst JobsData Analyst Jobs in Alton, IL

Data Analyst information

See Alton, IL salary details

$32.7K

$79.5K

$130.8K

How much do data analyst jobs pay per year?

As of Aug 17, 2026, the average yearly pay for data analyst in Alton, IL is $79,468.00, according to ZipRecruiter salary data. Most workers in this role earn between $60,100.00 and $93,300.00 per year, depending on experience, location, and employer.

What is the difference between Data Analyst vs Data Scientist?

AspectData AnalystData Scientist
Required CredentialsBachelor's degree in statistics, mathematics, or related field; often certifications in data analysis toolsBachelor's or master's in computer science, statistics, or related; often advanced certifications or degrees
Work EnvironmentBusiness settings, focusing on data reporting and visualizationResearch and development environments, focusing on predictive modeling and complex algorithms
Employer & Industry UsageRetail, finance, healthcare, and marketing companiesTech firms, research institutions, and large enterprises

While both roles analyze data, Data Analysts primarily focus on interpreting existing data to generate reports and insights, whereas Data Scientists develop predictive models and advanced algorithms to forecast trends and solve complex problems.

Can I learn a data analyst in 3 months?

A data analyst role requires skills in data manipulation, statistics, and tools like Excel, SQL, and Python or R. While three months can provide a foundational understanding through intensive training or bootcamps, gaining proficiency typically takes longer with consistent practice and real-world experience.

What are some common challenges data analysts face when working with large datasets, and how are they typically addressed?

Data Analysts often encounter challenges such as data quality issues, missing or inconsistent values, and slow processing times when handling large datasets. These challenges are typically addressed by implementing data cleaning routines, using advanced data management tools, and leveraging programming languages like Python or R for efficient data manipulation. Collaboration with database administrators and IT teams is also common to ensure data integrity and optimize data storage solutions. Staying updated with best practices in data wrangling and visualization helps Data Analysts deliver accurate and actionable insights.

What work does a data analyst do?

A data analyst collects, processes, and analyzes large datasets to identify trends, patterns, and insights that support business decision-making. They use tools like Excel, SQL, and data visualization software to interpret data and communicate findings to stakeholders. Strong analytical skills and attention to detail are essential for this role.

What are the key skills and qualifications needed to thrive as a data analyst, and why are they important?

To thrive as a Data Analyst, you need strong analytical skills, proficiency in statistics, and a relevant degree such as in mathematics, statistics, or computer science. Familiarity with data analysis tools like SQL, Excel, Python or R, and experience with visualization platforms such as Tableau or Power BI are typically required. Strong problem-solving abilities, attention to detail, and effective communication skills help analysts interpret data insights and present findings clearly to stakeholders. These skills are crucial for transforming raw data into actionable business insights that drive informed decision-making.

What are top 3 skills for a data analyst?

The top three skills for a data analyst are proficiency in data manipulation and analysis tools like Excel, SQL, and statistical software; strong analytical and problem-solving abilities; and effective communication skills to present insights clearly. Familiarity with data visualization tools such as Tableau or Power BI is also highly valuable. These skills enable data analysts to interpret complex data and support decision-making processes.

What does a data analyst do?

A Data Analyst is responsible for collecting, processing, and analyzing data to help organizations make informed business decisions. They use statistical tools and software to interpret data sets, identify trends, and create visual reports. Data Analysts often collaborate with other departments to provide actionable insights and support strategic planning. Their work helps organizations optimize operations, track performance, and solve business problems using data-driven approaches.
More about Data Analyst jobs

What are the most commonly searched types of Data Analyst jobs in Alton, IL?

The most popular types of Data Analyst jobs in Alton, IL are:

What job categories do people searching Data Analyst jobs in Alton, IL look for?

The top searched job categories for Data Analyst jobs in Alton, IL are:

What cities near Alton, IL are hiring for Data Analyst jobs?

Cities near Alton, IL with the most Data Analyst job openings:

Data Analyst jobs near you
Infographic showing various Data Analyst job openings in Alton, IL as of August 2026, with employment types broken down into 100% Full Time. Highlights an 80% In-person, and 20% Remote job distribution, with an average salary of $79,468 per year, or $38.2 per hour.

Data Analyst

Stellar IT Group

Saint Louis, MO • On-site

Contractor

Re-posted 21 days ago

Job description

Overview:
Job Title: Data Analyst
Job Location: Remote
Interview: Virtual
Job Duration: 6 Months Contract
Overview:
We are seeking a Data Analyst with strong SQL and Python expertise to support data validation, data quality, and exploratory data analysis. This role focuses on ensuring data is accurate, reliable, and structured for downstream analytics and reporting.
Note: This is not a Data Engineer role. Candidates must have a strong analytics and data validation background.
Key Responsibilities
  • Perform data validation and quality checks using SQL and Python
  • Conduct exploratory data analysis (EDA) to identify trends, anomalies, and insights
  • Analyze data structures, relationships, and lineage to ensure data integrity
  • Ensure data is usable, consistent, and reliable for analytics, BI, and business teams
  • Support data manipulation, reporting, and downstream data consumption
  • Collaborate with stakeholders to understand data requirements and usage

Required Qualifications
  • Bachelor's degree (Master's or PhD preferred)
  • 5+ years of relevant Data Analyst experience
  • Strong hands-on experience with SQL and Python (data validation, not just querying)
  • Deep understanding of data structures and data lifecycle, including:
    • Data shape, relationships, and storage
    • Data quality, consistency, and lineage
    • Ensuring data reliability for analytics and reporting
  • Experience with exploratory data analysis (EDA)
  • Experience with data manipulation and reporting

Preferred Qualifications
  • Experience with BI tools (Power BI preferred)
  • Healthcare domain experience (payer/provider, clinical, insurance, or operational data)
  • Experience with Databricks and/or PySpark

Skills:
Data Analyst,pYTHON

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