LocationLists: Federal Contractors — Other Scientific and Technical Consulting Services (NAICS 541690)

6,095 registered entities match (6,129 listings, 34 duplicates removed).

Price for 6,095 registered entities: $39 by card. One spreadsheet.
That is every match. Add total=<rows> to buy fewer.
The file is the list as published. Add the essentials (county population, median household income and median age) or a group of area data to every row below.
Add more area data to every row (each link reloads this answer with those columns added, and the buy link then delivers them):
- Add the essentials: https://locationlists.com/find?dataset=federal-contractors-other-scientific-and-technical-consulting-services-naics-541690&area_columns=county:population,median_household_income,median_age
- Census demographics: https://locationlists.com/find?dataset=federal-contractors-other-scientific-and-technical-consulting-services-naics-541690&area_columns=county:population,households,median_household_income,median_age,pct_65_plus,pct_bachelors_plus,housing_units,owner_occupied_share,median_home_value,population_estimate,population_growth_since_2020,pct_under_18,pct_5_to_14,pct_households_with_people_under_18
- Business activity by industry: https://locationlists.com/find?dataset=federal-contractors-other-scientific-and-technical-consulting-services-naics-541690&area_columns=county:establishments,employees,agriculture_establishments,mining_establishments,utilities_establishments,construction_establishments,manufacturing_establishments,wholesale_trade_establishments,retail_trade_establishments,transportation_establishments,information_establishments,finance_establishments,real_estate_establishments,professional_establishments,management_establishments,administrative_establishments,educational_services_establishments,health_care_establishments,arts_establishments,accommodation_establishments,other_services_establishments
- Weather normals: https://locationlists.com/find?dataset=federal-contractors-other-scientific-and-technical-consulting-services-naics-541690&area_columns=county:january_high,july_high,annual_high,january_low,july_low,annual_low,annual_precipitation,annual_cooling_degree_days,annual_heating_degree_days,hottest_month_high,coldest_month_low,annual_snowfall,annual_days_of_highs_reaching_90_f,annual_days_of_highs_reaching_100_f,growing_season_length_20f_50pct
- Storms: https://locationlists.com/find?dataset=federal-contractors-other-scientific-and-technical-consulting-services-naics-541690&area_columns=county:flash_flood_events,flood_events,hail_events,high_wind_events,hurricane_events,lightning_events,thunderstorm_wind_events,tornado_events,wildfire_events,winter_storm_events,strong_tornadoes,storm_injuries,storm_deaths,storm_property_damage,storm_crop_damage
- Drought: https://locationlists.com/find?dataset=federal-contractors-other-scientific-and-technical-consulting-services-naics-541690&area_columns=county:palmer_drought_severity_index,palmer_hydrological_drought_index,modified_palmer_drought_index,palmer_z_index,palmer_drought_severity_index_2025,palmer_hydrological_drought_index_2025,modified_palmer_drought_index_2025,palmer_z_index_2025
- Building stock: https://locationlists.com/find?dataset=federal-contractors-other-scientific-and-technical-consulting-services-naics-541690&area_columns=county:buildings,multi_story_buildings,mid_rise_buildings,high_rise_buildings,buildings_4_floors_plus,buildings_8_floors_plus,share_with_floors_published,share_with_height_published,building_footprint_area,estimated_floor_area,average_building_height,tallest_building_height
- Housing market and new construction: https://locationlists.com/find?dataset=federal-contractors-other-scientific-and-technical-consulting-services-naics-541690&area_columns=county:typical_home_value,home_value_change_1_year,typical_rent,rent_change_1_year,price_to_rent_ratio,housing_units_permitted_last_12_months,single_family_units_permitted_last_12_months,housing_units_permitted_per_1000_homes
- Household income from tax returns: https://locationlists.com/find?dataset=federal-contractors-other-scientific-and-technical-consulting-services-naics-541690&area_columns=county:tax_returns,average_adjusted_gross_income,average_wages,share_income_up_to_25k,share_income_200k_plus,share_income_100k_plus,share_with_business_income,share_with_capital_gains,share_elderly_returns,share_with_earned_income_credit,effective_federal_tax_rate
- Hazard risk: https://locationlists.com/find?dataset=federal-contractors-other-scientific-and-technical-consulting-services-naics-541690&area_columns=county:national_risk_index_score,national_risk_index_rating_level,expected_annual_loss,expected_annual_loss_to_buildings,social_vulnerability_score,community_resilience_score,avalanche_expected_annual_loss,coastal_flooding_expected_annual_loss,cold_wave_expected_annual_loss,drought_expected_annual_loss,earthquake_expected_annual_loss,hail_expected_annual_loss,heat_wave_expected_annual_loss,hurricane_expected_annual_loss,ice_storm_expected_annual_loss,landslide_expected_annual_loss,lightning_expected_annual_loss,inland_flooding_expected_annual_loss,strong_wind_expected_annual_loss,tornado_expected_annual_loss,tsunami_expected_annual_loss,volcanic_activity_expected_annual_loss,wildfire_expected_annual_loss,winter_weather_expected_annual_loss
- Agriculture: https://locationlists.com/find?dataset=federal-contractors-other-scientific-and-technical-consulting-services-naics-541690&area_columns=county:livestock_sales,cattle_inventory,crop_sales,average_producer_age,producers,farm_production_expenses,hired_farm_workers,cropland_acres,harvested_cropland_acres,land_and_buildings_value,land_and_buildings_value_per_acre,irrigated_acres,pastureland_acres,land_in_farms,average_farm_size,share_of_land_in_farms,farms,machinery_value,average_machinery_value_per_farm,tractors,market_value_of_products_sold,average_sales_per_farm,net_cash_farm_income
Buy the whole list — 6,129 rows · $39 (card, no account needed): https://locationlists.com/data/federal-contractors-other-scientific-and-technical-consulting-services-naics-541690/buy?src=find
Buy 6,095 rows · $39 (card, no account needed): https://locationlists.com/find/buy?dataset=federal-contractors-other-scientific-and-technical-consulting-services-naics-541690
Email me this quote (free, pay later): https://locationlists.com/find/quote?dataset=federal-contractors-other-scientific-and-technical-consulting-services-naics-541690

Preview (3 fixed sample row(s) from these lists, the same for every question — not a sample of your 6,095 matches):
- INDUSTRIAL HYGIENE PROFESSIONALS, INC. · 508 W O'BRIEN DRIVE, HAGATNA, GU 96910 · 671-734-0749 [federal-contractors-other-scientific-and-technical-consulting-services-naics-541690] — matches your question
- MEDVACON LIFE SCIENCES LLC · 35 SPARTA AVE, Sparta, NJ 07871 [federal-contractors-other-scientific-and-technical-consulting-services-naics-541690] — matches your question
- FAIR WINDS INNOVATIONS, LLC · 30329 SD HIGHWAY 37 # 604, Tyndall, SD 57066 [federal-contractors-other-scientific-and-technical-consulting-services-naics-541690] — matches your question

Where the matches are, by county (counts only, no names or contact details; 1,027 counties):
- Fairfax County, VA: 223
- Montgomery County, MD: 147
- Loudoun County, VA: 109
- San Diego County, CA: 100
- Los Angeles County, CA: 97
- District of Columbia, DC: 95
- Maricopa County, AZ: 87
- Prince George's County, MD: 81
- Harris County, TX: 78
- Cook County, IL: 58
- and 1,017 more counties (see https://locationlists.com/find?dataset=federal-contractors-other-scientific-and-technical-consulting-services-naics-541690&format=json)
Free map of these counts: https://locationlists.com/find/map?dataset=federal-contractors-other-scientific-and-technical-consulting-services-naics-541690
The same counts by ZIP code: https://locationlists.com/find?areas=zip&dataset=federal-contractors-other-scientific-and-technical-consulting-services-naics-541690

Other ways to ask this:
- Counts per county instead of rows: https://locationlists.com/find?dataset=federal-contractors-other-scientific-and-technical-consulting-services-naics-541690&areas=county
- Counts per ZIP code instead of rows: https://locationlists.com/find?dataset=federal-contractors-other-scientific-and-technical-consulting-services-naics-541690&areas=zip

Technical details (developers and AI agents): JSON: https://locationlists.com/find?dataset=federal-contractors-other-scientific-and-technical-consulting-services-naics-541690&format=json · Nothing is charged until checkout is paid.