diff --git a/cypress/component/DataSearch/dataset_search_filters.spec.js b/cypress/component/DataSearch/dataset_search_filters.spec.js
index a8bb21c17..d61ceac93 100644
--- a/cypress/component/DataSearch/dataset_search_filters.spec.js
+++ b/cypress/component/DataSearch/dataset_search_filters.spec.js
@@ -4,18 +4,20 @@ import { mount } from 'cypress/react';
 import React from 'react';
 import DatasetFilterList from '../../../src/components/data_search/DatasetFilterList';
 
-const duosUser = {
-    isSigningOfficial: false,
-};
-
 describe('Data Library Filters', () => {
-    beforeEach(() => {
-        cy.initApplicationConfig();
-    });
+  // Intercept configuration calls
+  beforeEach(() => {
+    cy.initApplicationConfig();
+  });
 
-    it('Renders the data library filters', () => {
-        const props = { datasets: [], filters: [], filterHandler: () => {}, isFiltered: () => {}};
-        mount(<DatasetFilterList {...props} />);
-        cy.get('div').should('contain', 'Filters');
-    });
+  it('Renders the data library filters', () => {
+    const props = { datasets: [], filterHandler: () => {}, isFiltered: () => {}};
+    mount(<DatasetFilterList {...props} />);
+    cy.get('div').should('contain', 'Filters');
+    cy.get('div').should('contain', 'Access Type');
+    cy.get('div').should('contain', 'Data Use');
+    cy.get('div').should('contain', 'Data Access Committee');
+    cy.get('div').should('contain', 'Data Type');
+    cy.get('div').should('contain', 'Participant Count');
+  });
 });
diff --git a/cypress/component/DataSearch/dataset_search_table.spec.js b/cypress/component/DataSearch/dataset_search_table.spec.js
index 85c1e92c6..c10b27638 100644
--- a/cypress/component/DataSearch/dataset_search_table.spec.js
+++ b/cypress/component/DataSearch/dataset_search_table.spec.js
@@ -9,7 +9,9 @@ const datasets = [
     datasetId: 123456,
     datasetIdentifier: `DUOS-123456`,
     datasetName: 'Some Dataset 1',
+    participantCount: 100,
     study: {
+      studyName: 'Some Study 1',
       studyId: 1,
       dataCustodianEmail: ['Some Data Custodian Email 1'],
     }
@@ -23,9 +25,11 @@ const props = {
 
 describe('Dataset Search Table tests', () => {
 
-  describe('Data library with three datasets', () => {
+  describe('Data library with one dataset footer tests', () => {
     beforeEach(() => {
+      cy.initApplicationConfig();
       cy.stub(TerraDataRepo, 'listSnapshotsByDatasetIds').returns({});
+      cy.clock();
       mount(<DatasetSearchTable {...props} />);
     });
 
@@ -38,6 +42,66 @@ describe('Dataset Search Table tests', () => {
       cy.get('#header-checkbox').click();
       cy.contains('1 dataset selected from 1 study');
     });
+  });
+
+
+  describe('Data library filter by participant count tests', () => {
+
+    beforeEach(() => {
+      cy.initApplicationConfig();
+      cy.stub(TerraDataRepo, 'listSnapshotsByDatasetIds').returns({});
+      cy.clock();
+    });
+
+    function handler(request, searchText) {
+      if (JSON.stringify(request.body).includes(searchText)) {
+        request.reply(['filtered']);
+      } else {
+        request.reply([]);
+      }
+    }
+
+
+    it('When a participant count filter is applied the query is updated', () => {
+      cy.intercept(
+        {method: 'POST', url: '**/search/index'}, (req) => {
+          return handler(req, '{"range":{"participantCount":{"gte":null,"lte":50}}}');
+        }).as('searchIndex');
+      mount(<DatasetSearchTable {...props} />);
+      // first clear the default value (100), without clearing first, type('50') would result in input of 10050
+      const range = cy.get('#participantCountMax-range-input');
+      range.clear();
+      range.type('50');
+      cy.tick(150);
+      // this api call should have had a request that contained the searchText
+      let count = 0;
+      cy.wait('@searchIndex').then((response) => {
+        expect(response.response.body[0]).to.equal('filtered');
+        count++;
+      });
+      cy.get('@searchIndex').then(() => {
+        expect(count).to.equal(1);
+      });
+
+    });
+
+    it('When an invalid participant count filter is applied the query represents the default value', () => {
+      cy.intercept({method: 'POST', url: '**/search/index'}, (req) => {
+        // when non-numeric input is entered, the default value (in this case, 100) is used
+        return handler(req, '{"range":{"participantCount":{"gte":100,"lte":null}}}');
+      }).as('searchIndex');
+      mount(<DatasetSearchTable {...props} />);
+      cy.get('#participantCountMin-range-input').type('test');
+      cy.tick(150);
+      let count = 0;
+      cy.wait('@searchIndex').then((response) => {
+        expect(response.response.body[0]).to.equal('filtered');
+        count++;
+      });
+      cy.get('@searchIndex').then(() => {
+        expect(count).to.equal(1);
+      });
+    });
 
   });
 });
diff --git a/src/components/data_search/DatasetFilterList.jsx b/src/components/data_search/DatasetFilterList.jsx
index 4b6825579..c8ff3d562 100644
--- a/src/components/data_search/DatasetFilterList.jsx
+++ b/src/components/data_search/DatasetFilterList.jsx
@@ -6,10 +6,10 @@ import ListItemButton from '@mui/material/ListItemButton';
 import ListItemIcon from '@mui/material/ListItemIcon';
 import ListItemText from '@mui/material/ListItemText';
 import Divider from '@mui/material/Divider';
-import { Button, Typography } from '@mui/material';
+import { Button, TextField, Typography } from '@mui/material';
 import { Checkbox } from '@mui/material';
-import {flatten, uniq, compact, orderBy} from 'lodash';
-import {getAccessManagementSummary} from '../../types/model';
+import { flatten, uniq, compact, orderBy } from 'lodash';
+import { getAccessManagementSummary } from '../../types/model';
 
 export const FilterItemHeader = (props) => {
   const { title, headerStyle = { fontFamily: 'Montserrat', fontWeight: '600', marginTop: '1em' } } = props;
@@ -21,20 +21,20 @@ export const FilterItemHeader = (props) => {
 };
 
 export const FilterItemList = (props) => {
-  const { category, datasets, filter, filterHandler, isFiltered, filterNameFn, filterDisplayFn } = props;
+  const { category, filter, filterHandler, isFiltered, filterNameFn, filterDisplayFn } = props;
   return (
     <List sx={{ margin: '-0.5em -0.5em' }}>
       {
-        filter.map((filter) => {
-          const filterName = filterNameFn(filter);
+        filter.map((filterOption) => {
+          const filterName = filterNameFn(filterOption);
           return (
-            <ListItem disablePadding key={filter}>
-              <ListItemButton sx={{ padding: '0' }} onClick={(event) => filterHandler(event, datasets, category, filter)}>
+            <ListItem disablePadding key={filterOption}>
+              <ListItemButton sx={{ padding: '0' }} onClick={() => filterHandler(category, filterOption)}>
                 <ListItemIcon>
-                  <Checkbox checked={isFiltered(filter, category)} />
+                  <Checkbox checked={isFiltered(filterOption, category)} />
                 </ListItemIcon>
                 <ListItemText sx={{ fontFamily: 'Montserrat', transform: 'scale(1.2)' }}>
-                  {filterDisplayFn ? filterDisplayFn(filter) : filterName}
+                  {filterDisplayFn ? filterDisplayFn(filterOption) : filterName}
                 </ListItemText>
               </ListItemButton>
             </ListItem>
@@ -45,14 +45,37 @@ export const FilterItemList = (props) => {
   );
 };
 
+export const FilterItemRange = (props) => {
+  const { min, max, minCategory, maxCategory, filterHandler } = props;
+  const getValue = (val, defaultVal) => isNaN(Number(val)) ? defaultVal : Number(val);
+  return (
+    <Box key={minCategory + '-' + maxCategory} sx={{ display: 'flex', flexDirection: 'row', alignItems: 'center' }}>
+      <TextField id={minCategory + '-range-input'} size='small' margin='dense' variant='outlined' defaultValue={min}
+        helperText={'minimum'}
+        FormHelperTextProps={{style: { transform: 'scale(1.5)' }}}
+        onChange={(event) => filterHandler(minCategory, getValue(event.target.value, min))}/>
+      <Box padding={'0rem 1rem 1rem'}> - </Box>
+      <TextField id={maxCategory + '-range-input'} size='small' margin='dense' variant='outlined' defaultValue={max}
+        helperText={'maximum'}
+        FormHelperTextProps={{style: {transform: 'scale(1.5)'}}}
+        onChange={(event) => filterHandler(maxCategory, getValue(event.target.value, max))}
+      />
+    </Box>
+  );
+};
+
 export const DatasetFilterList = (props) => {
-  const { datasets, filters, filterHandler, isFiltered, onClear } = props;
+  const { datasets, filterHandler, isFiltered, onClear } = props;
 
   const accessManagementFilters = uniq(compact(datasets.map((dataset) => dataset.accessManagement)));
   const dataUseFilters = uniq(compact(flatten(datasets.map((dataset) => dataset.dataUse?.primary))).map((dataUse) => dataUse.code));
   const dataTypeFilters = uniq(flatten(datasets.map((dataset) => dataset.study.dataTypes)));
   const dacFilters = orderBy(uniq(compact(datasets.map((dataset) => dataset.dac?.dacName))), (dac) => dac.toLowerCase(), 'asc');
-
+  const defaultValues = datasets.reduce((acc, dataset) => {
+    return {
+      max: Math.max(acc.max, dataset.participantCount ? dataset.participantCount : 0),
+      min: Math.min(acc.min, dataset.participantCount ? dataset.participantCount : Infinity) };
+  }, {max: 0, min: Infinity});
   return (
     <Box sx={{ bgcolor: 'background.paper' }}>
       <Box sx={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
@@ -101,15 +124,24 @@ export const DatasetFilterList = (props) => {
         isFiltered={isFiltered}
         filterNameFn={(filter) => filter}
       />
-      <FilterItemHeader title="Data Type" />
+      <FilterItemHeader title='Data Type' />
       <FilterItemList
-        category="dataType"
+        category='dataType'
         datasets={datasets}
         filter={dataTypeFilters}
         filterHandler={filterHandler}
         isFiltered={isFiltered}
         filterNameFn={(filter) => filter}
       />
+      <FilterItemHeader title='Participant Count' />
+      <FilterItemRange
+        min={defaultValues.min}
+        max={defaultValues.max}
+        minCategory='participantCountMin'
+        maxCategory='participantCountMax'
+        datasets={datasets}
+        filterHandler={filterHandler}
+      />
     </Box>
   );
 };
diff --git a/src/components/data_search/DatasetSearchTable.jsx b/src/components/data_search/DatasetSearchTable.jsx
index 989e8dfc6..d6677887c 100644
--- a/src/components/data_search/DatasetSearchTable.jsx
+++ b/src/components/data_search/DatasetSearchTable.jsx
@@ -3,8 +3,8 @@ import Tabs from '@mui/material/Tabs';
 import useOnMount from '@mui/utils/useOnMount';
 import * as React from 'react';
 import { Box, Button } from '@mui/material';
-import { useEffect, useRef, useState } from 'react';
-import { isEmpty } from 'lodash';
+import {useEffect, useRef, useState} from 'react';
+import { isArray, isEmpty } from 'lodash';
 import { TerraDataRepo } from '../../libs/ajax/TerraDataRepo';
 import { DatasetSearchTableDisplay } from './DatasetSearchTableDisplay';
 import { datasetSearchTableTabs } from './DatasetSearchTableConstants';
@@ -37,7 +37,9 @@ const defaultFilters = {
   accessManagement: [],
   dataUse: [],
   dataType: [],
-  dac: []
+  dac: [],
+  participantCountMin: null,
+  participantCountMax: null,
 };
 
 export const DatasetSearchTable = (props) => {
@@ -49,8 +51,12 @@ export const DatasetSearchTable = (props) => {
   const [selectedTable, setSelectedTable] = useState(datasetSearchTableTabs.study);
   const [searchTerm, setSearchTerm] = useState('');
 
-  const isFiltered = (filter, category) => (filters[category]).indexOf(filter) > -1;
-  const numSelectedFilters = (filters) => Object.values(filters).reduce((sum, array) => sum + array.length, 0);
+  const isFilteredArray = (filter, category) => (filters[category]).indexOf(filter) > -1;
+
+  const anyFiltersSelected = (filters) =>
+    Object.values(filters).some(filter => {
+      return isArray(filter) ? filter.length > 0 : filter !== null;
+    });
 
   const getExportableDatasets = async (datasets) => {
     // Note the dataset identifier is in each sub-table row.
@@ -108,7 +114,7 @@ export const DatasetSearchTable = (props) => {
     }
 
     let filterQuery = {};
-    if (numSelectedFilters(filters) > 0) {
+    if (anyFiltersSelected(filters)) {
       const filterTerms = [];
 
       filterTerms.push({
@@ -155,6 +161,15 @@ export const DatasetSearchTable = (props) => {
         }
       });
 
+      filterTerms.push({
+        'range': {
+          'participantCount': {
+            'gte': filters.participantCountMin,
+            'lte': filters.participantCountMax,
+          }
+        }
+      });
+
       if (filterTerms.length > 0) {
         filterQuery = [
           {
@@ -179,13 +194,19 @@ export const DatasetSearchTable = (props) => {
     };
   };
 
-  const filterHandler = (event, data, category, filter) => {
-    var newFilters = _.clone(filters);
-    if (!isFiltered(filter, category) && filter !== '') {
-      newFilters[category] = filters[category].concat(filter);
+  const filterHandler = (category, filter) => {
+    let newFilter;
+    if (isArray(filters[category])) {
+      if (!isFilteredArray(filter, category) && filter !== '') {
+        newFilter = filters[category].concat(filter);
+      } else {
+        newFilter = filters[category].filter((f) => f !== filter);
+      }
     } else {
-      newFilters[category] = filters[category].filter((f) => f !== filter);
+      newFilter = filter;
     }
+    const newFilters = _.clone(filters);
+    newFilters[category] = newFilter;
     setFilters(newFilters);
   };
 
@@ -280,7 +301,7 @@ export const DatasetSearchTable = (props) => {
         </Box>
         <Box sx={{display: 'flex', flexDirection: 'row', paddingTop: '2em'}}>
           <Box sx={{width: '14%', padding: '0 1em'}}>
-            <DatasetFilterList datasets={datasets} filters={filters} filterHandler={filterHandler} isFiltered={isFiltered} onClear={() => setFilters(defaultFilters)}/>
+            <DatasetFilterList datasets={datasets} filterHandler={filterHandler} isFiltered={isFilteredArray} onClear={() => setFilters(defaultFilters)}/>
           </Box>
           <Box sx={{width: '85%', padding: '0 1em'}}>
             {(() => {