Agency Administrative Assistant Salary in Missouri

How much does an Agency Administrative Assistant make in Missouri? As of September 01, 2026, the average salary for an Agency Administrative Assistant in Missouri is $43,159 per year, which breaks down to an hourly rate of $21.

However, an Agency Administrative Assistant's salary can vary significantly. Here's a look at the typical salary range:

  • Top Earners (90th percentile): $54,365
  • Majority Range (25th-75th percentile): $38,953 to $49,024
  • Entry-Level (10th percentile): $35,124

Key Factors That Influence Agency Administrative Assistant Salaries

An Agency 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.

How Experience Level Affects Agency Administrative Assistant Salaries?

Experience is a primary driver of an Agency Administrative Assistant's salary. As you build your skills and take on more complex tasks, your compensation generally increases. Here's how the average salary grows at different career stages:

  • Entry-Level (less than 1 year): $41,937
  • Early Career (1-2 years): $47,182
  • Mid-Level (2-4 years): $54,323
  • Senior-Level (5-8 years): $72,338
  • Expert (over 8 years): $83,063
Job RoleYears of ExperienceAverage Salary
Agency Administrative Assistant less than 1 year $41,937
Sales Assistant II 1-2 years $47,182
Sales Assistant III 2-4 years $54,323
Sales Assistant Team Leader 5-8 years $72,338
Sales Support Supervisor over 8 years $83,063

Top Paying Cities for Agency Administrative Assistant

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:

  • Braggadocio: $41,820
  • Eugene: $41,991
  • Fortuna: $41,979

Agency Administrative Assistant Salary by Industry: Top Paying Sectors

For Agency Administrative Assistant roles, the industry you choose can affect earning potential by as much as 55% (the gap between the highest and lowest paying industries). Data shows that the Biotechnology and Financial Services sectors offer the strongest compensation, at 20% above the average. In contrast, Agency Administrative Assistant positions in Hospitality & Leisure or Edu., Gov't. & Nonprofit typically offer lower base pay, as these industries often view Agency Administrative Assistant as a support function rather than a direct revenue driver.

The top paying industries for an Agency Administrative Assistant

Industry Sector Average Annual Salary Average Hourly Rate Pay vs.Avg
Biotechnology $51,790 $25.0 20%
Financial Services $51,790 $25.0 20%
Pharmaceuticals $51,790 $25.0 20%
Software & Networking $51,790 $25.0 20%
Telecom $51,790 $25.0 20%

Agency Administrative Assistant Salary: Hourly Rate, Weekly Pay, and Monthly Pay

Understanding how an Agency 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.

  • Yearly
  • Monthly
  • Weekly
  • Hourly
  • Table View
Last Updated on September 01, 2026
$38,953
Average $43,159/year
$49,024
$3,246
Average $3,597/month
$4,085
$749
Average $830/week
$943
$19
Average $21/hour
$24
Annual Salary Monthly Pay Weekly Pay Hourly Wage
75th Percentile $49,024 $4,085 $943 $24
Average $43,159 $3,597 $830 $21
25th Percentile $38,953 $3,246 $749 $19

Find Your Next Agency Administrative Assistant Job

Ready to take the next step in your career? Browse thousands of current Agency Administrative Assistant job openings on our job board. Use the search bar below to find your perfect match.

  • KVC Missouri | Columbia, MO

    KVC Missouri | Columbia, MO

    KVC Missouri Community Based Services - Foster Care Case Managment TeamLocation: Columbia, MOJob Type: Full-TimeJob SummaryThe Administrative Assistant pla... more

    7 Days Ago

  • Youth In Need | Saint Charles, MO

    Youth In Need | Saint Charles, MO

    Would you like a career that changes lives while working with a team built on shared values. Look no further. At Youth In Need, we value community and rela... more

    7 Days Ago

  • SSI | Kansas City, MO

    SSI | Kansas City, MO

    Company DescriptionJob DescriptionThis position is responsible for performing general administrative, office support to a specific department within the co... more

    7 Days Ago

  • Civil and Environmental Consultants | Saint Charles, MO

    Civil and Environmental Consultants | Saint Charles, MO

    Administrative AssistantJob LocationsUS-MO-St. CharlesCategoryAdministrativeTypeFull-TimeOverviewJoin our team at Civil & Environmental Consultants, Inc. (... more

    7 Days Ago

  • Compass Group | Chesterfield, MO

    Compass Group | Chesterfield, MO

    We are hiring immediately for a full time ADMINISTRATIVE ASSISTANT position.Location: Parkway School District - 455 North Woods Mill Road, Chesterfield, MO... more

    7 Days Ago

  • Archdiocese of St Louis | Eureka, MO

    Archdiocese of St Louis | Eureka, MO

    The Archdiocese of St. Louis strives to teach and share our faith, serve others, and foster unity throughout the St. Louis area. Once a part of Kenrick-Gle... more

    7 Days Ago

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