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As of August 01, 2026, the average salary for a Project Administrative Assistant in Missouri is $49,268 per year, which breaks down to an hourly rate of $24.
However, a Project Administrative Assistant's salary can vary significantly. Here’s a look at the typical salary range:
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Project Administrative Assistant Salaries by Percentile
| Annual Salary |
Monthly Pay |
Weekly Pay |
Hourly Wage |
|
| 75th Percentile | $54,472 | $4,539 | $1,048 | $26 |
| Average | $49,268 | $4,106 | $947 | $24 |
| 25th Percentile | $43,823 | $3,652 | $843 | $21 |
J. F. Electric - Saint Louis, MO
Ozarks Elder Law LLC - Springfield, MO
CEMAX - Saint Louis, MO
JS English Enterprises, LLC - O Fallon, MO
A Project Administrative Assistant's salary isn't a fixed number. It's shaped by several important factors. Below, we'll explore how your years of experience, geographic location and company size can directly affect your earning potential.
Your salary can change significantly depending on where you work. States with a higher cost of living and strong industrial sectors often pay more to attract Project Administrative Assistants. For example, consider the average annual salaries in these key locations:
Salaries can also vary between different cities. Major metropolitan areas or cities with a high demand for technicians often offer more competitive pay. Here are a few examples of average annual salaries in different U.S. cities:
For Project Administrative Assistant roles, the industry you choose can affect earning potential by as much as 65% (the gap between the highest and lowest paying industries). Data shows that the Biotechnology and Internet sectors offer the strongest compensation, at 25% above the average. In contrast, Project Administrative Assistant positions in Transportation or Edu., Gov't. & Nonprofit typically offer lower base pay, as these industries often view Project Administrative Assistant as a support function rather than a direct revenue driver.
| Industry Sector | Average Annual Salary | Average Hourly Rate | Pay vs.Avg |
|---|---|---|---|
| Biotechnology | $61,585 | $30.0 | 25% |
| Internet | $59,121 | $28.0 | 20% |
| Software & Networking | $59,121 | $28.0 | 20% |
| Energy & Utilities | $56,658 | $27.0 | 15% |
| Aerospace & Defense | $54,194 | $26.0 | 10% |
Understanding how a Project Administrative Assistant's annual salary breaks down can help with budgeting. Below, you can see the average hourly rate, weekly pay, and monthly pay for this role. Use the buttons to switch between different pay periods.
| Annual Salary | Monthly Pay | Weekly Pay | Hourly Wage | |
|---|---|---|---|---|
| 75th Percentile | $54,472 | $4,539 | $1,048 | $26 |
| Average | $49,268 | $4,106 | $947 | $24 |
| 25th Percentile | $43,823 | $3,652 | $843 | $21 |
Ready to take the next step in your career? Browse thousands of current Project Administrative Assistant job openings on our job board. Use the search bar below to find your perfect match.
United Bags Inc.
Saint Louis, MO
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O Fallon, MO
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Murphy Company
St Louis, MO
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Americo CORP
Kansas City, MO
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Archdiocese of St Louis
Silex, MO
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Columbia, MO
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