Electrolytic capacitors from US brands and US-based sellers
6 US brands and sellers surfaced here at $3.90 to $84.14, each verified from Amazon's own published seller info.
Amazon ranks by what sells fastest, so a electrolytic capacitor from an established brand gets buried under cheap imports no matter how far you scroll. This page lists the US brands and US-based sellers for electrolytic capacitors, so you can start from the ones worth trusting.
We read each seller's registered country from Amazon's own published seller info. We don't claim anything here is manufactured in the US, only that you're buying from a US brand or a US-based seller.
Confirmed US brands and sellers
6 listings where Amazon's own seller info places the seller in the US. Each badge says which.

AVX NOJA106M006RWJ Cap 10µF 6 3V 20% 1206 SMD New Lot Quantity-20

Mallory SONALERT CGS383U016V3C 16 VDC, 2 in X 3.125 in, ELECTROLYTIC, Capacitor, Screw, 38000 UF

ILLINOIS CAPACITOR 225TTA450M 20%, 450V, Aluminum ELECTROLYTIC Capacitor 2.2UF, AXIAL; CAPACITANCE:2.2µF; Voltage(DC):450V; CAPACITANCE Tolerance:± 20%; TERMINALS:AXIAL LEADED; Lifetime @ TE

Kemet Set of 10, 105°C Electrolytic Capacitor 47uF 25V (47 mfd 25V) 20% Radial, 3/16" x 7/16" (5x11mm)

Mallory CGS562U025BD1 Electrolytic Capacitor

Vishay Aluminum Electrolytic Capacitor 2200Uf, 25V, 20%, Axial - MAL202116222E3